Clean-label reformulation in Sri Lanka: an R&D scenario for FMCG

By the Silk Foods Ceylon Editorial Team

Most clean-label briefs that reach a Sri Lankan contract manufacturer begin with the back of a pack, not a recipe. A brand manager points at the tail of the ingredient list, a row of additive names and INS numbers, and asks how many can come off. Some come off cheaply. Some cost shelf life. One may never have belonged there.

This post runs one composite scenario from label audit to first reformulated batch: an established tomato-chilli sauce with four additives the brand wants gone. Every regulatory reference is to an instrument on the Ministry of Health’s current regulations register. Each was read at source for this article, not taken from a summary.

The scenario: a five-year-old sauce and a four-additive brief

In this composite scenario, a mid-tier Sri Lankan FMCG brand sells a tomato-chilli sauce in glass bottles through supermarkets and neighbourhood retail. Its ingredient list ends in four additives: sodium benzoate (211), sunset yellow FCF (110), monosodium glutamate (621) and modified starch (1422). The brief is to remove as many as possible without losing taste or shelf life.

The brand is not in trouble. The sauce has held its shelf for five years and moves around 10,000 bottles a month. What changed is the conversation around it. A category review asked for a shorter ingredient list, and the brand’s own sales team noticed shoppers turning bottles over before buying.

That second observation has data behind it. A national survey published in BMC Public Health in October 2025 covered 2,569 people across 25 districts. It found 89.8 per cent were aware of Sri Lanka’s traffic-light colour-coded labels. The fieldwork ran from November 2022 to April 2023. A population that recognises the front of a pack is one that reads the back.

The written brief had four lines. Remove as many of the four additives as the product can lose. Hold the taste close enough that a trained panel cannot reliably tell old from new. Keep twelve months unopened at ambient temperature. And keep the ingredient cost increase inside a number the retail price can absorb.

What does the current label actually permit?

Before any bench work, the current formulation is checked against Sri Lanka’s additive regulations as they stand today. Four instruments cover this sauce: the Food (Preservatives) Regulations 2019, the Food (Additives - General) Regulations 2019, the Food (Colouring Substances) Regulations 2006 as amended in 2011, and the Food (Flavouring Substances and Flavour Enhancers) Regulations 2013.

The audit exists because spec sheets age. Plenty of Sri Lankan product files still cite the Food (Preservatives) Regulations of 1989. Regulation 9 of the 2019 regulations rescinded them. The 2019 instrument was published in Gazette Extraordinary No. 2113/16 of 5 March 2019 and has been in operation since 1 January 2020.

The 2019 preservative rules work by permission, not prohibition. Regulation 2 allows only the preservatives in Schedule I. Regulation 3 allows each one only in the foods, and at the maximum levels, set against it in Schedule II. Regulation 4 caps any mixture at 100 per cent of those limits combined.

For non-emulsified sauces, with ketchup given as the example, Schedule II lists sorbates up to 1,000 mg/kg and sulphites up to 300 mg/kg. Benzoates appear against two foods only: carbonated drinks at 120 mg/kg and artificially flavoured syrup concentrates at 600 mg/kg. On a plain reading, sodium benzoate has no listed place in this sauce.

That turns the first line of the brief from a marketing preference into a compliance fix. A brand in this position should put its product category to the Food Control Administration Unit in writing. That happens before the reformulation starts, and the reply goes on file.

Additive on the current label	Function	Governing instrument	Position for this sauce
Sodium benzoate (211)	Preservative	Food (Preservatives) Regulations 2019, reg 3 and Schedule II	Not listed for non-emulsified sauces. Listed only for carbonated drinks and flavoured syrup concentrates
Sunset yellow FCF (110)	Colour	Food (Colouring Substances) Regulations 2006, reg 7(a), and the 2011 amendment	Permitted. Synthetic colours are capped at 100 mg/kg, singly or combined
Monosodium glutamate (621)	Flavour enhancer	Food (Flavouring Substances and Flavour Enhancers) Regulations 2013, reg 6 and Schedule III	Permitted as an enhancer, but Schedule III bars enhancers from all fruit and vegetable products. Confirm the category
Modified starch (1422)	Stabiliser	Food (Additives - General) Regulations 2019, reg 2(b)	Stabilisers follow the Codex list and limits unless a product standard applies

The MSG line needs the same written check. Item 8 of Schedule III to the 2013 regulations bars flavour enhancers from all fruit and vegetable products. The exceptions are fruit and vegetable powders and dry instant chutney mix. Whether a tomato-chilli sauce sits inside that category is a question for the regulator, not the formulator.

One more point about those numbers in brackets. Codex guideline CXG 36-1989 sets up the International Numbering System. It calls the system a harmonised naming scheme and says inclusion does not imply approval by Codex. An INS number identifies an additive. It says nothing about whether that additive is allowed in a particular Sri Lankan food.

Swapping each additive, and what the swap costs

Each additive in a clean-label brief has three possible exits. Remove it and let the process carry its job, replace it with a less objectionable additive, or replace it with an ordinary ingredient. Only the first and third shorten the INS list. The second can make a label look different without making it cleaner.

The preservative is the hard one, because its job is shelf life. Weak-acid preservatives such as sorbic acid work mainly in their undissociated form, which dominates at low pH. A 2013 review in the International Journal of Food Microbiology puts sorbic acid’s pKa at 4.76. The same review names Zygosaccharomyces bailii, a yeast that spoils tomato sauce and cordials, as highly resistant to preservatives.

Put simply, the acid was already doing most of the work. A preservative-free sauce leans on it completely. The University of Georgia Cooperative Extension set out the hot-fill-hold route in June 2025. The equilibrium pH sits at or below 4.6. The product is heated to around 82 to 93 Celsius, filled, inverted and held for two to five minutes. A process authority signs off the schedule.

The honest trade-off sits after opening. Without a preservative, an opened bottle has less protection against mould and yeast, so the storage instruction on the label changes. Under the 2026 labelling regulations, storage and use instructions must appear in at least two of the three languages.

Colour is where clean-label briefs most often fool themselves. Swapping sunset yellow for paprika extract or beetroot red does not remove a number from the pack. The 2011 amendment to the colouring regulations lists natural colours with INS numbers: curcumin 100(i), annatto 160b, paprika oleoresin 160c and beet red 162. The cleaner exit is no added colour, with more tomato solids and a chilli chosen for its colour.

The flavour enhancer comes out in favour of a longer reduction, roasted onion and garlic, and more tomato concentrate. Replacing 621 with disodium guanylate (627) or disodium inosinate (631) is not a clean-label move. Both are still flavour enhancers, and regulation 8(4) of the 2013 regulations bars declaring the absence of one enhancer while another is present.

There is a label dividend here. Under regulation 10(4) of the 2026 labelling regulations, a food with added flavour enhancers carries a separate statement naming them. It also carries the words “Not recommended for children under three years of age”. Remove every enhancer and that statement leaves the pack with them.

Modified starch holds the sauce together in the bottle. Much of that job can move to the process: colloid milling, more tomato solids, and a native starch that reads as an ordinary ingredient. Why sauces separate, and what the mill fixes, is covered in the sauce first-run maths.

Current additive	Clean-label route	What the label still shows	The trade-off
Sodium benzoate (211)	Remove it. Lower the pH and hot fill and hold	Nothing in its place	Shorter life after opening, a refrigerate-after-opening instruction, and tighter pH control on every batch
Sodium benzoate (211)	Replace with potassium sorbate (202), up to 1,000 mg/kg	Potassium sorbate (202)	Closes the compliance gap, but the label is no shorter and a no-preservatives claim is off the table
Sunset yellow FCF (110)	Replace with paprika oleoresin or beet red	Paprika oleoresin (160c) or beet red (162)	Still an INS number on the pack, and colour stability needs its own shelf-life check
Sunset yellow FCF (110)	Remove it. More tomato solids and a redder chilli	Nothing in its place	Higher ingredient cost per bottle, and colour varies with the tomato crop
Monosodium glutamate (621)	Remove it. Longer reduction, roasted onion and garlic	Nothing in its place	Longer kettle time, and the regulation 10(4) statement comes off the label
Modified starch (1422)	Colloid milling plus native starch or more tomato solids	Starch, as an ingredient	Viscosity drifts more between batches, so it needs a viscosity specification at release

How the bench-to-batch sequence runs

A clean-label reformulation at a contract manufacturer runs in gated stages. The audit comes first, then bench iterations, sensory screening, a pilot batch with a validated fill process, and a shelf-life study. At Silk Foods Ceylon, a bench iteration takes two to four weeks, and most recipes lock within two to four rounds.

1. Audit the label and the specification. List every additive with its INS number, its function and its governing regulation, and settle any category question with the regulator in writing.
2. Set the targets in numbers: a pH ceiling with margin below 4.6, a Brix and viscosity window, a colour reference, and the twelve-month ambient target.
3. Run the bench iterations. Each sample is measured for pH, Brix and viscosity before anyone tastes it.
4. Screen against the current product. A triangle test shows whether a panel can tell old from new, which is the real taste brief.
5. Pilot on the production kettle. Kettle-scale cooking behaves differently from a bench pan, and the hot-fill-hold schedule is validated here with a process authority.
6. Start the shelf-life study. Accelerated conditions give an early read, and real-time data supports the printed expiry date.
7. Change the label, then book the first commercial run.

This is R&D / NPD (Co-Development on the SFC brochure) rather than straight contract manufacturing. The recipe is not locked until the pilot and the early shelf-life read report back. Once it is, the same line runs the first commercial batch. For a sauce in glass bottles, the first-run minimum at the Matale facility is 1,250 bottles.

The iteration that surprises brands is usually the second. The first sample drops all four additives and tastes flat. The second restores the depth with more tomato concentrate and a longer cook, and it tastes right. It can also sit closer to the acid line than the first, because the extra tomato solids buffer the added acid.

That is why the research team at the Matale facility reads pH on every sample before the tasting spoon comes out. A sauce that passes the panel and then fails the pH check costs another round, which means another two to four weeks on the calendar. Measuring first is cheaper than tasting first.

Stage	Typical window	Output that gates the next stage
Label and regulatory audit	About a week, plus any regulator reply	A written position on each additive and on the product category
Bench iterations	2 to 4 weeks each, usually 2 to 4 rounds	A candidate recipe inside the pH, Brix and viscosity window
Sensory screening	Inside the final bench round	A triangle test result against the current product
Pilot kettle batch	Inside the development window	A hot-fill-hold schedule signed off by a process authority
Shelf-life study	An accelerated read first, real-time data to the claimed life	The evidence behind the printed expiry date
New label and print	In parallel with the study	A complete ingredient list, storage instruction and nutrition panel
Purchase order to dispatch	6 to 10 weeks where development work is involved	The first commercial run, from 1,250 bottles

The screening method, and how many tasters it actually needs, is set out in sensory panel screening before you commit. The stability side is covered in shelf-life and accelerated stability testing. The heat-trial side of turning a recipe into a production process is in reformulating a kitchen recipe for retort.

Which label and SLSI touchpoints does a reformulation trigger?

A reformulation changes the ingredient list, so it changes the label. Regulation 5(2)(a)(i) of the Food (Labelling and Advertising) Regulations 2026 requires a complete list of ingredients. Each additive is declared by its common name and INS number. Label stock printed for the old recipe cannot go on the new one.

That makes label inventory a line in the reformulation budget. A brand holding six months of printed labels either runs them out on the old recipe first or writes them off. The decision belongs on the timeline before the pilot batch, not after it. Print lead times are covered in the artwork and print lead time gate.

The claim a clean-label brand usually wants is “No preservatives”. The 2026 regulations do not require prior approval for it. Regulation 13(3) still counts composition as a claim, so regulations 13(1) and 13(2) apply and the claim must not be false or misleading. Where a claim is true of every similar food, regulation 13(10)(f) requires a qualifying statement.

Natural is not available. Regulation 13(8) reserves it for unmixed, unadulterated or unprocessed products with no additives, and a cooked, blended sauce is none of those. Pure is narrower still under regulation 13(7). A reformulated sauce can say what it leaves out. It cannot call itself natural.

The trap is in the supply chain. Regulation 8(1)(e) of the Food (Additives - General) Regulations 2019 exempts from declaration an additive carried over from an ingredient below its working level. A bought-in tomato paste preserved with sulphite can leave no trace on the ingredient list and still make a “No preservatives” claim misleading. Check the supplier’s certificate of analysis before that claim goes to print.

Print the nutrition panel now. Schedule II of the 2026 regulations makes a nutrition declaration mandatory for all foods one year after gazette publication, which falls in late June 2027. A label redesigned this year without one gets redesigned again next year. The full element list is in the 2026 labelling checklist.

The Sri Lanka Standards Institution (SLSI) enters where the product carries the SLS certification mark. The mark certifies conformity with a named Sri Lanka Standard. A change of preservative, colour or stabiliser is one the certification body needs to see before product ships under it. Confirm the procedure with SLSI directly. Which categories make the mark mandatory is covered in the SLSI mark and retail listing.

Touchpoint	Instrument and provision	What the reformulation changes
Ingredient list	Labelling Regulations 2026, reg 5(2)(a)(i)	A new complete list, with additives by common name and INS number
Flavour enhancer statement	Labelling Regulations 2026, reg 10(4)	Removed if every enhancer is removed
Storage instruction	Labelling Regulations 2026, reg 5(2)(d)	Refrigerate after opening, if the preservative goes
”No preservatives” claim	Labelling Regulations 2026, regs 13(1) to 13(3) and 13(10)(f)	No prior approval, but it must not mislead, including through carry-over
Natural and pure	Labelling Regulations 2026, regs 13(8) and 13(7)	Not available for a reformulated sauce
Nutrition panel	Labelling Regulations 2026, Schedule II	Mandatory from late June 2027, so print it now
Preservative level	Preservatives Regulations 2019, reg 3 and Schedule II	Sorbates up to 1,000 mg/kg if a preservative stays
SLS mark	SLSI product certification	Confirm with SLSI before shipping under the mark

Where a cleaner label is the wrong brief

Some clean-label briefs should not go ahead as written. Three cases come up most: a low-acid product that would need a retort once the preservative goes, a price point that cannot absorb more tomato solids, and a launch date with no room for a shelf-life study.

A coconut-based or dhal-thickened sauce is the clearest example. Where any component sits above pH 4.6, removing the preservative does not lead to hot fill and hold. It leads to a validated retort process and a different line booking. That can still be the right call, but it is a different project at a different cost.

Price is the second case. Replacing a colour and an enhancer with tomato concentrate and cooking time adds cost to every bottle. For a sauce sold on price, a partial brief often works better. Fix the benzoate, drop the enhancer, keep a permitted colour, and revisit the rest at the next repricing.

Time is the third. A brand that needs a new label on shelf within a month should fix the compliance point first and run the fuller reformulation on a proper calendar. Silk Foods Ceylon says so at the brief stage, not after the first iteration invoice.

Frequently asked questions

Is sodium benzoate permitted in sauces in Sri Lanka?

Schedule II of the Food (Preservatives) Regulations 2019 lists benzoates against two foods only: carbonated drinks at 120 mg/kg and artificially flavoured syrup concentrates at 600 mg/kg. Non-emulsified sauces such as ketchup are listed for sorbates up to 1,000 mg/kg and sulphites up to 300 mg/kg. Confirm a specific category with the Food Control Administration Unit.

Can a reformulated sauce be labelled natural in Sri Lanka?

No. Regulation 13(8) of the Food (Labelling and Advertising) Regulations 2026 allows natural only for unmixed, unadulterated or unprocessed products with no additives, and a cooked, blended sauce does not qualify. A “No preservatives” claim needs no prior approval, but it must not mislead under regulations 13(1) to 13(3), including through carry-over.

Do natural colours need an INS number on a Sri Lankan food label?

Yes. Regulation 5(2)(a)(i) of the 2026 labelling regulations requires each additive to be declared by its common name and INS number. The 2011 amendment to the colouring regulations lists natural colours with INS numbers, including curcumin 100(i), annatto 160b, paprika oleoresin 160c and beet red 162, so a swap still leaves a number.

How long does a clean-label reformulation take?

At Silk Foods Ceylon, a bench iteration takes two to four weeks and most recipes lock within two to four rounds. A pilot batch, a validated hot-fill-hold schedule and the start of a shelf-life study follow. Purchase order to dispatch typically runs six to ten weeks where development work is involved.

Can Silk Foods Ceylon reformulate an existing sauce for a cleaner label?

Yes. The in-house R&D team at the Matale facility reformulates existing SKUs under R&D / NPD, then runs the locked recipe as contract manufacturing on the same line. A first bottled-sauce run starts at 1,250 bottles, and the facility is BRCGS- and FSSC 22000 V6-audited, with SLSI submission support inside a standard engagement.

How Silk Foods Ceylon can help

For local FMCG brands reformulating an existing SKU, Silk Foods Ceylon (SFC) runs R&D / NPD and contract manufacturing under one roof at a 10,000 sq ft cellular-manufacturing facility in Matale. Bench iterations take 2 to 4 weeks each, and a first commercial run of a bottled sauce starts at 1,250 bottles, with the semi-liquid line filling 3,000 jars a day. The facility is BRCGS- and FSSC 22000 V6-audited, with SLSI submission support and Sri Lanka Food Act labelling support inside a standard engagement.

To brief a project, email b2b@esilkroute.com.lk or call +94 76 441 0389 / +94 76 918 5744.

Sources

Government of Sri Lanka, Food (Labelling and Advertising) Regulations 2026, Gazette Extraordinary No. 2494/47 of 26 June 2026, in operation from 1 July 2026. Regulations 5(2)(a)(i), 5(2)(d), 10(4), 13(1) to 13(3), 13(7), 13(8), 13(10)(f) and Schedule II. eohfs.health.gov.lk (retrieved 11 September 2026).

Government of Sri Lanka, Food (Preservatives) Regulations 2019, Gazette Extraordinary No. 2113/16 of 5 March 2019, in operation from 1 January 2020. Regulations 2 to 4 and 9, and Schedule II. eohfs.health.gov.lk (retrieved 11 September 2026).

Government of Sri Lanka, Food (Additives - General) Regulations 2019, Gazette Extraordinary No. 2131/2 of 8 July 2019, in operation from 1 January 2020. Regulations 2(b) and 8(1)(e). eohfs.health.gov.lk (retrieved 11 September 2026).

Government of Sri Lanka, Food (Colouring Substances) Regulations 2006, in operation from 1 May 2007, regulation 7(a). eohfs.health.gov.lk (retrieved 11 September 2026).

Government of Sri Lanka, Food (Colouring Substances) (Amendment) Regulations 2011, Gazette Extraordinary No. 1688/28 of 14 January 2011, Tables I and II. eohfs.health.gov.lk (retrieved 11 September 2026).

Government of Sri Lanka, Food (Flavouring Substances and Flavour Enhancers) Regulations 2013, Gazette Extraordinary No. 1795/51 of 1 February 2013. Regulations 6, 7 and 8(4), and Schedule III. eohfs.health.gov.lk (retrieved 11 September 2026).

Ministry of Health, Sri Lanka, Food Control Administration Unit, Current Regulations register. eohfs.health.gov.lk (retrieved 11 September 2026).

Codex Alimentarius Commission, Class Names and the International Numbering System for Food Additives, CXG 36-1989, as amended in 2015. fao.org (retrieved 11 September 2026).

Codex Alimentarius Commission, General Standard for Food Additives, CXS 192-1995. fao.org (retrieved 11 September 2026).

University of Georgia Cooperative Extension, Preserving Acidified Foods Using the Hot-Fill-Hold Process, Circular 1328-03, June 2025. fieldreport.caes.uga.edu (retrieved 11 September 2026).

Stratford M. et al., weak-acid preservative resistance in Zygosaccharomyces bailii, International Journal of Food Microbiology, 2013. pmc.ncbi.nlm.nih.gov (retrieved 11 September 2026).

Wijesinghe et al., awareness of traffic-light food labelling in Sri Lanka, BMC Public Health, October 2025. National sample of 2,569 across 25 districts; fieldwork November 2022 to April 2023. pmc.ncbi.nlm.nih.gov (retrieved 11 September 2026).

Silk Foods Ceylon, internal capability data for the Matale facility: 2 to 4 weeks per R&D iteration, typically 2 to 4 iterations before a recipe locks; 1,250-bottle first-run minimum for bottled products; 3,000 jars a day on the semi-liquid line; 6 to 10 weeks from purchase order to dispatch where development work is involved. silkfoodsceylon.com (retrieved 11 September 2026).