Who needs these checks

People assessing lactose in a FODMAP plan

Monash FODMAP identifies lactose as the relevant FODMAP in regular dairy. If lactose restriction is part of your individual plan, check the custard’s milk ingredients and the serving you intend to have before treating its salt figure as a reason to choose it.

Consumers comparing salt

Compare tins using salt per 100g, then look at the portion you expect to serve. The NHS advises adults to have no more than 6g of salt a day; a low-fat label does not tell you which custard has less salt.

Consumers considering a milk-free format

If avoiding milk ingredients matters more than buying a tin, a ready-to-serve carton may be worth considering. Check its full recipe and serving separately rather than treating milk-free wording as a low-FODMAP claim.

What to check when buying

For custard on a FODMAP diet, establish whether the recipe and serving suit your individual plan first. Salt figures and packaging format then help distinguish the options that remain.

Concern What to check Who this matters to
Lactose and FODMAP fit Read the milk ingredients and assess the intended serving against your individual FODMAP plan. Neither reduced-salt nor milk-free wording settles the whole recipe’s suitability. If lactose is the ingredient I need to assess, choosing by salt alone could overlook the reason I am checking custard in the first place. About 42% of consumers put lactose and FODMAP fit first.
Salt comparison Compare salt per 100g on current labels, then check the amount for your intended portion. Do not use a low-fat claim as a salt figure. I can eat a suitable dairy custard, but I want to distinguish tins by their declared salt rather than their fat description. For about 33% of consumers, salt comparison is the primary concern.
Format and storage Confirm whether the product is a tin, carton or chilled pot, and follow its opening and storage instructions. Once a recipe fits my needs, I want a ready-to-serve format that works for how I store and use custard. Format and convenience come first for about 25% of consumers.

Mistakes to avoid

  • Assuming low fat means less salt

    Ocado lists 0.12g salt per 100g for Ambrosia Low Fat Devon Custard 400g, compared with 0.11g for the standard Devon Custard 400g tin.

    Use the same per-100g measure to compare salt, and read fat information as a separate part of the label.

  • Treating a salt figure as a FODMAP claim

    Both Ambrosia tins in the salt comparison are milk-based. Monash FODMAP identifies lactose in regular dairy as a separate consideration from salt.

    Check the milk ingredients and intended serving against your individual FODMAP plan before choosing between the tins.

  • Switching to milk-free custard without checking the recipe

    A milk-free option addresses milk ingredients, not every question about the full recipe or serving. The Alpro ready-to-serve alternative described by Sainsbury’s is a carton rather than a tin.

    Check the current ingredients, serving and package format before switching.

  • Relying on an older nutrition panel

    Tesco Groceries warns that food ingredients, nutrition and allergen information can change when products are reformulated.

    Use the current pack information when an ingredient or salt figure affects your choice.

Brands and alternatives to consider

Ambrosia

Its standard and Low Fat Devon Custard 400g tins provide a like-for-like format for checking declared salt.

  • Ocado lists 0.11g salt per 100g for the standard tin and 0.12g per 100g for the Low Fat tin.
  • Both are milk-based, so the salt comparison does not settle individual lactose or FODMAP suitability.

Bird's

Bird's Custard Powder is a preparation option rather than a ready-to-serve tin.

  • Preparing custard from powder lets you choose the liquid used in the recipe.
  • Assess the complete prepared recipe and serving; the powder is not directly comparable with a ready-to-serve tin.

Alpro

Sainsbury’s describes Alpro Vanilla Custard as a milk-free soya custard in a carton.

  • Its format offers a ready-to-serve alternative when avoiding milk ingredients is the priority.
  • Milk-free wording alone does not establish whether the full recipe and intended serving fit a low-FODMAP plan.

M&S

The M&S custard described by Ocado is a chilled alternative, not an ambient tin.

  • It gives consumers considering chilled custard another format to assess.
  • It contains milk and requires refrigeration, so check both the ingredients and storage instructions.

Tinned custard selections on Joybuy

These are 400g Ambrosia custard tins for consumers considering a ready-to-serve dairy option. Check whether milk ingredients and your intended serving fit your individual FODMAP plan before choosing by flavour, salt or a low-fat label.

Ambrosia Strawberry Flavour Devon Custard 400g

Ambrosia Strawberry Flavour Devon Custard 400g

Consider this tin if strawberry flavour is part of the custard you want. It is a 400g variant; check its own current ingredients and salt declaration rather than applying figures from the plain Devon Custard tin.

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Ambrosia Devon Custard 400g

Ambrosia Devon Custard 400g

Consider this standard tin if a dairy custard fits your individual plan and salt is your next comparison. Ocado lists 0.11g salt per 100g for Ambrosia Devon Custard 400g; confirm the figure on the current pack.

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Ambrosia Low Fat Custard 400g

Ambrosia Low Fat Custard 400g

Consider this 400g tin if you are looking specifically at the low-fat variant and dairy fits your individual plan. Check its current salt declaration separately: the low-fat name does not establish that it contains less salt than the standard tin.

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Questions about custard, salt and FODMAPs

Does less salt make tinned custard low FODMAP?

No. Salt and FODMAP suitability are different checks: Monash FODMAP identifies lactose in regular dairy as a relevant FODMAP. If lactose restriction is part of your plan, assess the tin’s milk ingredients and intended serving even when its salt figure is lower.

Which of the two Ambrosia 400g tins lists less salt?

Ocado lists 0.11g salt per 100g and 0.14g per 130g portion for standard Ambrosia Devon Custard. Its Low Fat Devon Custard listing gives 0.12g per 100g and 0.16g per 130g portion. These are comparisons of the listed tins, not a FODMAP assessment.

Should I compare custard salt per 100g or per serving?

Use the per-100g figures to compare different products on the same basis, then consider the portion you will actually have. The NHS advises adults to have no more than 6g of salt a day, so a dessert’s contribution sits alongside salt from other foods.

Is a milk-free custard automatically suitable for a FODMAP diet?

No. A milk-free description addresses milk ingredients, not the suitability of the complete recipe and serving. Sainsbury’s describes Alpro Vanilla Custard as a milk-free soya custard in a carton; check its current ingredients against your individual plan before switching from a tin.