Private-label jam in Sri Lanka: brix, pectin, jars and costing

By the Silk Foods Ceylon Editorial Team

A jam range is one of the easier things for a Sri Lankan brand owner to imagine and one of the harder ones to specify. The fruit is local and seasonal, and a three or four flavour range reads as a proper brand rather than a single SKU.

Then the specification sheet arrives. It asks for soluble solids at fill, fruit content as a percentage of finished product, pH, pectin type and dose, net contents and net drained weight, and a declared shelf life with the storage instruction that supports it. Those fields are the difference between a product that can be called jam on a Sri Lankan label and one that cannot.

The two numbers a jam has to hit before anything else

Codex Alimentarius CXS 296-2009, the Standard for Jams, Jellies and Marmalades, adopted in 2009, is the composition reference the category runs on. It sets two figures. Soluble solids for jam, jelly and citrus marmalade shall in all cases be between 60 and 65 per cent or greater. Fruit ingredient content shall be not less than 45 per cent of the finished product in general, with a long list of named exceptions.

Two clauses in the same standard catch first-time briefs. The scope excludes reduced sugar products, products with a very low sugar content, and products where the sweetening foodstuffs have been replaced wholly or partly by additive sweeteners. A low sugar jam cannot borrow the Codex jam definition to support itself.

The second clause is about naming. Codex states that use of the terms preserve and conserve is required to comply with the requirements for jam or extra jam. Calling the SKU a preserve rather than a jam does not lower the fruit content floor or the soluble solids target. It is the same specification wearing a different word.

The flavour-development side of a jam range, and how many sample iterations a flavour set typically takes before it locks, is worked through in coconut jam flavour variants and in-house R&D.

How much fruit does a Sri Lankan jam actually have to contain?

Not 45 per cent, for most of the fruits a local range would use. Codex CXS 296-2009 sets a general floor of 45 per cent fruit ingredient as a percentage of finished product, then names a schedule of exceptions that runs down to 8 per cent, because strongly flavoured and high acidity fruits become unpalatable at high inclusion. Almost every fruit in a Sri Lankan range appears on that schedule, so the recipe target is set by the fruit rather than by a single category number.

The standard also offers a second, lower set of floors as an alternative, with the product labelled accordingly. Both columns are below, converted into grammes of fruit in a 300 g jar so the number is usable at the bench.

Fruit	Minimum fruit content, higher option	Minimum fruit content, lower option	Fruit in a 300 g jar, higher option
General case, including pineapple, papaya, strawberry	45 per cent	35 per cent	135 g
Mango, rambutan, roselle	35 per cent	25 per cent	105 g
Soursop, also sold locally as anoda	30 per cent	20 per cent	90 g
Banana, guava, jackfruit, sappota	25 per cent	15 per cent	75 g
Cashew apple	23 per cent	16 per cent	69 g
Durian	20 per cent	10 per cent	60 g
Tamarind	10 per cent	6 per cent	30 g
Passion fruit and other strong or high acidity fruits	8 per cent	6 per cent	24 g
Non-citrus marmalade, general case	30 per cent	Not applicable	90 g
Ginger, as a non-citrus marmalade	11 per cent	Not applicable	33 g

Two rules sit alongside the table. Where fruits are mixed, the minimum is reduced in proportion to the percentages used, so a mango and passion fruit blend does not inherit the mango floor across the whole recipe. Citrus marmalade is specified differently again: not less than 200 g of citrus fruit ingredient per 1,000 g of finished product, of which at least 75 g must come from the endocarp, meaning the pulp rather than the peel.

The consequence for a range is that the flavours are not equally expensive. A pineapple jam at a 45 per cent floor carries almost five times the fruit of a compliant passion fruit jam, so pricing a range as though the flavours cost the same holds only until the first quotation arrives against real recipes.

Pectin, acid and sugar are one setting, not three line items

A jam gels because pectin, acid and sugar sit in a narrow relationship, and moving any one of them moves the other two. The FAO fruit and vegetable processing manual puts the window plainly: pectin forms a viscous semi-solid at a pH of 3.2 to 3.4 in the presence of a high concentration of sugar, with a working target for pineapple jam of pH 3.2 plus or minus 0.2. Above that band the gel weakens. Below it the gel can weep, and syneresis shows in the jar.

Dosage in the same manual is pectin grade 200 at roughly 60 to 85 g per 10 kg of fruit for base recipes, with grade 150 used for pineapple at 225 g per 40 lb of pulp. The number that surprises people is the adjustment rule: dosage increases by 5 to 30 per cent depending on container capacity and target soluble solids. Pectin dose is not a property of the recipe. It is a property of the recipe in a particular jar.

That has a scheduling consequence. A three-flavour set in one jar size is one set of trials. The same three flavours in a 220 ml gift jar and a 500 ml family jar is a second set, because the dose has to be re-established for each container. Deciding jar sizes late turns a four-week development into a nine-week one.

The sugar side is more forgiving. The manual gives three standard fruit-to-sugar ratios, 50:50, 45:55 and 40:60, with finished jam landing at about 32 to 34 per cent water. That is where the Codex soluble solids requirement points, which is why a jam boiled correctly to spec tends to satisfy both at once.

The wider problem of a kitchen recipe that has to survive a commercial batch, and what reformulation actually changes, is covered in reformulating a kitchen recipe for a 1,500-jar run.

Can a jam hold shelf life in Sri Lanka without added preservative?

Yes, and the law pushes hard in that direction anyway. Under Schedule II of the Food (Preservatives) Regulations 1989, made under the Food Act, benzoic acid is not a permitted preservative in jam in Sri Lanka. Sorbic acid is permitted, capped at 350 mg/kg. A brand owner arriving with a sauce-industry habit of specifying sodium benzoate finds that option closed before the formulation conversation starts.

What holds the product instead is the process. The FAO manual is candid about the limit of sugar alone: the maximum water activity reduction achievable through sugar addition is about 0.848, and that value does not protect the product from mould and osmophilic yeast attack. The protection comes from the thermal step and the closure. During jam boiling all micro-organisms in the product are destroyed, and if it is filled hot into clean receptacles which are then sealed, microbial spoilage will not occur during storage.

Read as a specification, shelf life here is a set of process parameters rather than an ingredient: fill temperature, time between fill and seal, headspace, jar and lid hygiene at filling, and the cooling regime. A manufacturer can hold those to a record. A home kitchen usually cannot.

The R&D and production planning team at the Matale facility sees the same gap on most first jam briefs, and it is almost never the fruit. A kitchen recipe is boiled to a visual cue, the wrinkle test on a chilled plate, rather than to a refractometer reading and a thermometer. That cue is repeatable for one saucepan and not across a 1,500-jar batch, where the last jar is filled at a different temperature from the first unless the process says otherwise. Converting a cue into a measured endpoint takes two to four sample iterations, and it is the step that compresses the timeline hardest when it is left until after artwork is committed.

There is a labelling trap on the other side of this. The Food (Labelling and Advertising) Regulations 2026 state that where a label makes a claim in respect of similar foods having the same characteristics, it must also carry a second statement, in the language required, in the same fonts and in close proximity, specifying that all similar foods share that characteristic. The gazette gives its own worked example: a vegetable oil labelled free from cholesterol must also state that vegetable oils do not contain cholesterol. Since benzoic acid is not permitted in jam at all, a no added preservatives flash on a jam pack is arguably exactly this class of claim, and the paired statement needs designing in rather than adding after a rejection.

How a declared shelf life is actually established rather than assumed, and what an accelerated study can and cannot tell you, is set out in shelf life and accelerated stability testing in Sri Lanka.

The jar decides the fill, the panel and the case

Glass jar selection is usually treated as a brand decision and settled last. It pays to settle first, because three requirements hang off it: the pectin dose already discussed, the declared net contents, and the space available for a compliant label panel.

The Food (Labelling and Advertising) Regulations 2026, gazetted as Extraordinary No. 2494/47 of 26 June 2026 under the Food Act, No. 26 of 1980, require net contents in SI units, expressed as g or kg for solids, and where the food is packaged in a liquid medium, the net drained weight expressed as g or kg alongside it. A set jam is one declaration. A fruit preserve packed in syrup is two, which changes both panel space and how a category buyer reads value on shelf.

The same regulations require instructions for storage and use in a minimum of two of the three languages, with an exception from the Chief Food Authority only where the surface area is small, and a date of expiry declared numerically in two of the three languages at not less than 1.5 millimetres. On a 220 ml gift jar those requirements plus an ingredient list consume most of the wrap before the brand has room.

Jar format	Typical fill	Best fit in a range	The constraint it introduces
220 ml glass, twist lid	About 200 g	Gift-shop and hotel amenity SKU	Label panel is the binding constraint, not the recipe
330 ml glass, twist lid	About 300 g	The standard retail SKU across the range	Sets the pectin dose the rest of the range is trialled against
500 ml glass, twist lid	About 450 g	Value or family tier, food service	Longer cool-down, higher risk of set variation top to bottom
Square 420 ml glass	About 380 g	Differentiated premium tier within a range	Corner fill and label wrap both need separate trials

The print and origination side of a trilingual compliance block, and why artwork is usually the gate on a private-label launch date rather than production, is covered in artwork and print lead time as the private-label gate. The clearance pathway that runs in parallel is set out in SLSI clearance for a private-label jam, and jams, jellies, marmalades and preserves also sit under the SLSI import inspection scheme against SLS 265 at HS 2007.10, 2007.91 and 2007.99, which is a step an importer faces and a local manufacturer does not.

What does a first private-label jam run cost in LKR?

Less than most brand owners fear on the ingredients and more than they expect on everything else. Silk Foods Ceylon (SFC) runs a first-run MOQ of 1,500 jars per flavour on the semi-liquid line at the Matale facility, against a line capacity of 3,000 jars of 300 g per day. A three-flavour range at MOQ is about a day and a half of filling plus changeovers, which is why flavours per block moves the cost per jar more than the batch size of any single flavour.

The build-up below is a planning model, not a quotation. The material rates are stated assumptions for a 2026 Sri Lankan first run at 1,500 jars, and the method is given so it can be rebuilt with different inputs.

Cost line	Per 300 g jar at 1,500 jars	Assumption used
Fruit ingredient, 135 g at a 45 per cent floor	LKR 74	Local processed pulp at LKR 550 per kg
Sugar, about 165 g	LKR 40	Industrial white sugar at LKR 240 per kg
Pectin and acidulant, about 2 g	LKR 15	High methoxyl pectin at LKR 7,500 per kg
Ingredients subtotal	LKR 129	Falls to about LKR 70 on a passion fruit or tamarind recipe
Glass jar and twist lid	LKR 110	330 ml flint jar bought at a 1,500-unit order quantity
Self-adhesive label, four colour	LKR 24	Short-run rate, origination excluded
Shipper carton share, 12 jars per case	LKR 15	LKR 180 per case
Packaging subtotal	LKR 149	Larger than the ingredients subtotal at this volume
Materials total	LKR 278	Before conversion, QA release and margin
Artwork and print origination, one off	LKR 30 to 60 per jar	LKR 45,000 to 90,000 spread across 1,500 jars

The line that changes the decision is the packaging subtotal. At 1,500 jars the glass, the label and the carton come to LKR 149 against LKR 129 of ingredients, so the container costs more than what goes in it. On a passion fruit or tamarind recipe, where the compliant fruit floor is 8 or 10 per cent, packaging can approach twice the ingredient cost.

That points the cost lever away from the recipe. Trimming fruit content runs into the Codex floor within a few percentage points, while moving from a 1,500-jar order quantity to a 6,000-jar one drops the origination line from LKR 30 to 60 per jar to roughly LKR 8 to 15 and usually moves the glass onto a better tier. Reaching 6,000 jars across a three-flavour range at 2,000 each is an easier ask than reaching it on one flavour, which is the argument for launching a range rather than a hero SKU.

The same style of yield and input arithmetic, applied to a drying rather than a filling process, is set out in the LKR maths behind a dehydration quote. For a comparable glass-jar SKU on the same line, see private-label vegan mayonnaise in glass jars.

What to lock before briefing a jam range

Buyer's checklist Which fruit, and therefore which Codex fruit-content floor the recipe has to clear. The number changes by a factor of five across the fruits a Sri Lankan range would use. Whether the range is declared as jam, as preserve or as conserve. All three carry the jam composition requirement, so the naming choice buys nothing on spec. Target soluble solids at fill, measured on a refractometer, not judged on a cold plate. Target pH at fill, and the acidulant used to reach it, since the pectin set depends on it. Pectin type, grade and dose per batch, restated for every jar size in the range rather than carried across from the first one. Jar size and closure for each SKU, with the label panel area measured before artwork begins. Whether the product sits in a liquid medium, which triggers a net drained weight declaration alongside net contents. Storage and use instruction wording in at least two of Sinhala, Tamil and English, drafted at the same time as the shelf-life claim. Flavours per production block and jars per flavour, since both move the cost per jar more than any ingredient line.

There is a supply-side reason this category keeps drawing local brand owners. Research reported by the Daily News in April 2025 confirmed that about 270,000 tonnes of Sri Lankan vegetable and fruit production is wasted every year before reaching the end consumer, with post-harvest losses in transport alone costing roughly LKR 20 billion annually. Preserving turns a seasonal glut into shelf-stable inventory, which is the oldest commercial argument in the category and still the strongest one here.

Frequently asked questions

What brix does a jam have to reach?

Codex CXS 296-2009, adopted in 2009, requires soluble solids of 60 to 65 per cent or greater for jam, jelly and citrus marmalade. Non-citrus marmalade sits at 40 to 65 per cent. The FAO processing manual puts finished jam at 32 to 34 per cent water, which is the same target expressed from the other side.

How much fruit does a mango or passion fruit jam need?

Codex CXS 296-2009 sets a general floor of 45 per cent fruit ingredient as a percentage of finished product, but names exceptions by fruit. Mango sits at 35 per cent, jackfruit and guava at 25 per cent, tamarind at 10 per cent and passion fruit at 8 per cent. Mixed fruit recipes reduce the minimum in proportion.

Can a jam be made in Sri Lanka without added preservatives?

Yes, and benzoic acid is not permitted in jam under Schedule II of the Food (Preservatives) Regulations 1989 in any case, with sorbic acid capped at 350 mg/kg. Shelf life comes from boiling, a hot fill into clean receptacles and an immediate seal, rather than from an added preservative, per the FAO processing manual.

What is the private-label MOQ for a jam range at Silk Foods Ceylon?

First-run MOQ is 1,500 jars per flavour on the semi-liquid line at the Matale facility, which runs 3,000 jars of 300 g per day. A three-flavour range at MOQ is roughly a day and a half of filling plus changeovers. The facility is BRCGS- and FSSC 22000 V6-audited, with SLSI submission support inside the engagement.

How Silk Foods Ceylon can help

For local FMCG brands building a private-label jam and fruit-preserve range, Silk Foods Ceylon (SFC) runs private labelling and contract manufacturing from a cellular-manufacturing facility in Matale, with a semi-liquid line at 3,000 jars of 300 g per day and a first-run MOQ of 1,500 jars per flavour. Soluble solids, pH, pectin dose per jar size and the fill and seal parameters that carry the shelf life are established during the engagement rather than after artwork is committed, which is where most jam projects lose four to six weeks. The in-house R&D team works through two to four sample iterations per flavour before a recipe locks. The facility is BRCGS- and FSSC 22000 V6-audited, with SLSI clearance and Sri Lanka Food Act labelling support built into a standard engagement.

To brief a jam or fruit-preserve range, email b2b@esilkroute.com.lk or call +94 76 441 0389 / +94 76 918 5744.

Sources

Codex Alimentarius Commission, Standard for Jams, Jellies and Marmalades, CXS 296-2009, adopted 2009, on soluble solids, the fruit content schedule by fruit, the citrus marmalade requirement and the preserve and conserve naming clause. fao.org (retrieved 28 August 2026).

Food and Agriculture Organization of the United Nations, Fruit and Vegetable Processing, chapter 8, on the pH 3.2 to 3.4 pectin gelation window, pectin grade and dosage, fruit to sugar ratios, the 0.848 water activity limit and preservation by hot filling into sealed receptacles. fao.org (retrieved 28 August 2026).

Food (Labelling and Advertising) Regulations 2026, Gazette Extraordinary No. 2494/47 of 26 June 2026, made under the Food Act, No. 26 of 1980, Ministry of Health, on net contents and net drained weight, storage instructions, the date of expiry declaration and the paired-statement rule for claims common to similar foods. eohfs.health.gov.lk (retrieved 28 August 2026).

Sri Lanka Standards Institution, Items Covered Under Import Inspection Scheme, listing jams, jellies, marmalades and preserves against SLS 265 at HS codes 2007.10, 2007.91 and 2007.99. slsi.lk (retrieved 28 August 2026).

Levels of Benzoic and Sorbic Acid Preservatives in Commercially Produced Ready to Serve Products in Sri Lanka, Journal of Chemistry: Education Research and Practice, reporting Schedule II of the Food (Preservatives) Regulations 1989 under the Food Act, that benzoic acid is not a permitted preservative in jam and that sorbic acid is allowed up to 350 mg/kg. opastpublishers.com (retrieved 28 August 2026).

Gayan Abeykoon, Over 270,000 tons of Lanka annual vegetable and fruit production perish, Daily News, 23 April 2025, on annual post-harvest losses and the roughly LKR 20 billion cost of losses in transport. dailynews.lk (retrieved 28 August 2026).