Who is shopping for it?

Immediate late-night snack buyers

If you want custard without making it from powder, look for ready-to-serve serving instructions. Ambrosia says its Devon Custard can be eaten hot or cold; Bird’s Original Custard Powder requires preparation.

Shoppers comparing labelled sugars and fat

If those figures influence your choice, compare the per-100g labels of the exact variants. Ambrosia describes its Light Devon Custard in relation to its standard Devon Custard; that does not establish the figures for every product named Low Fat.

What matters when choosing?

For a late-night custard snack, decide whether immediate serving, a suitable pack amount or the labelled sugars and fat is your primary concern.

Concern What to check Who this matters to
Ready-to-serve format Check whether the pack permits cold serving. Bird’s Original Custard Powder instead requires milk, sugar and heating. If I want something to eat straight away at midnight, preparation is the deciding factor. About 42% of consumers put immediate serving first.
Pack amount Compare the stated weight and the opened-pack storage instructions; a 400g tin and a 500g carton are different formats. When I may leave custard for another snack, I want an amount I can use within its stated storage period. For about 33% of consumers, pack amount is the primary concern.
Labelled sugars and fat Compare sugars and fat per 100g on the exact variants, rather than relying on a variant name alone. If I am choosing between standard and lighter-labelled custards, I want to see what each pack actually states. Labelled sugars and fat come first for about 25% of consumers.

Avoid these mix-ups

  • Picking powder for an immediate snack

    Bird’s Original Custard Powder must be mixed and heated, unlike a ready-to-serve custard that permits cold serving.

    Choose a ready-to-serve product if you want to eat it straight away; choose powder when you want to prepare the custard yourself.

    Bird’s powder also requires milk and sugar for the stated preparation method.

  • Putting the metal tin in the microwave

    The checked Ambrosia heating directions call for transferring custard into a microwaveable container first.

    If you warm it, decant the custard and follow the heating instructions on its pack.

  • Giving every opened custard the same fridge life

    Ambrosia instructs consumers to remove leftover custard from its standard and Light cans, refrigerate it and use it within three days. The checked M&S custard states two refrigerated days.

    Note when you open the pack and follow its own storage directions. Food Standards Scotland also advises checking the label for opened-food storage instructions.

Brands and formats to consider

Tesco

Tesco Groceries lists a 400g own-label Ready To Serve Custard among its tinned custards.

  • The listed 400g format is directly relevant if you want a tin rather than custard powder.
  • Check the current pack for ingredients, allergens and opened-pack storage directions.

Ambrosia

Ambrosia has standard and Light Devon Custard cans, alongside other flavoured variants in the checked Tesco tinned listing.

  • Ambrosia says its standard 400g Devon Custard can be served hot or cold.
  • Its standard and Light cans instruct consumers to remove leftovers from the can, refrigerate them and use them within three days. Check the exact variant’s label when comparing nutrition.

Sainsbury’s

Sainsbury’s Ready To Eat Custard comes in a 500g carton, offering another ready-to-serve format rather than a tin.

  • The product listing says it can be served hot or cold.
  • Its carton is not a substitute if you specifically need a tin; the listing instructs refrigeration after opening and use within three days.

M&S

M&S offers a 400g ambient custard described with whole milk and vanilla flavour.

  • The 400g pack gives shoppers a cupboard custard format to consider.
  • Marks & Spencer instructs consumers to refrigerate it after opening and eat it within two days.

Bird’s

Bird’s Original Custard Powder is a preparation-based alternative, not ready-to-eat tinned custard.

  • Preparing it yourself lets you follow a recipe using your chosen milk.
  • Bird’s directions require milk, sugar, mixing and heating, so it will not serve the same immediate-snack need.

Joybuy custard selections

These 400g Ambrosia custards cover a standard version, a Low Fat version and a strawberry-flavour version for shoppers considering a late-night snack. Check each product’s current pack directions before serving or storing it.

Ambrosia Devon Custard 400g

Ambrosia Devon Custard 400g

Consider this standard Devon Custard if you want a 400g product that Ambrosia says can be eaten hot or cold. For leftovers, Ambrosia instructs consumers to remove the contents from the can, refrigerate them and use them within three days.

View on Joybuy
Ambrosia Low Fat Custard 400g

Ambrosia Low Fat Custard 400g

Consider this 400g Low Fat variant if its labelled fat content matters to your choice. Read this product’s own per-100g nutrition panel rather than applying figures or comparisons stated for Ambrosia Light Devon Custard.

View on Joybuy
Ambrosia Strawberry Flavour Devon Custard 400g

Ambrosia Strawberry Flavour Devon Custard 400g

Consider this 400g variant if you want strawberry flavour rather than standard Devon Custard. Follow the directions on this exact pack for serving and storing any custard left after opening.

View on Joybuy

Questions about serving and storage

Can I eat ready-to-serve custard cold?

Yes, where the product’s serving directions allow it. Ambrosia says its standard Devon Custard can be eaten hot or cold, and Sainsbury’s gives the same serving options for its Ready To Eat Custard. Check the directions on the pack you buy.

Can I microwave custard in its tin?

Do not put the metal tin in the microwave. Ambrosia’s directions say to empty the custard into a microwaveable container before heating; follow the pack’s heating instructions.

How long can I keep custard after opening it?

Follow the time and storage directions for the exact product. Ambrosia’s standard and Light cans instruct consumers to remove leftovers from the can, refrigerate them and use them within three days; the checked M&S custard states two refrigerated days.

Can I assume a plant-based custard is suitable for a milk allergy?

No. Ambrosia’s plant-based custard page says the product may contain milk, while its checked standard and Light dairy custards contain milk ingredients. Read the current allergen statement on the exact pack rather than relying on a variant name.