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Custard Slice
Custard Slice by Sainsbury's provides 283 kcal per 100 g, with 27.5 g of sugars and 3.2 g of protein. That is 92% more sugar than the average product in this category. Its Nutri-Score is D and it is classified as NOVA 4 (ultra-processed food). It is listed in the Custards and pastry creams category and comes in a 90g (×2) pack. Contains: gluten, milk, soybeans.
Nutrient levels per 100 g
Levels use UK front-of-pack reference thresholds.
Nutrition facts
Serving size: 90g
| Nutrient | Per 100 g | Per serving | % DV* | Category avg |
|---|---|---|---|---|
| Calories | 283 kcal | 255 kcal | 149 +89% | |
| Total fat | 11.3 g | 10.2 g | 13% | 4.6 +148% |
| Saturated fat | 6 g | 5.4 g | 27% | 2.7 +121% |
| Carbohydrates | 41.6 g | 37.4 g | 14% | 23.9 +74% |
| Total sugars | 27.5 g | 24.8 g | 14.3 +92% | |
| Added sugars | 19.4 g | 17.5 g | 35% | 11.2 +73% |
| Dietary fiber | 0.9 g | 0.8 g | 3% | 0.6 +49% |
| Protein | 3.2 g | 2.9 g | 6% | 3 +7% |
| Salt | 0.3 g | 0.3 g | 0.2 +83% |
*% Daily Value for a serving, based on a 2,000-calorie diet (FDA reference values). Category average across 75 Custards and pastry creams products on Foodmetria.
Compared with other custards and pastry creams
Bar shows the share of products in this category that contain less of the nutrient.
Ingredients
Custard (61%) (Water, British Cream (Cows' Milk), Sugar, Milk Protein Concentrate (Cows' Milk), Maize Starch, Dextrose, Stabiliser: Pectins, Calcium Sulphate, Tetrasodium Diphosphate; Flavouring, Glucose, Gelling Agent: Sodium Alginate; Colour: Mixed Carotenes), Fortified Wheat Flour (Wheat Flour, Calcium Carbonate, Iron, Niacin, Thiamin), Sugar, Palm Stearin, Palm Oil, Butter (1.5%) (Cows' Milk), Dried Glucose Syrup, White Chocolate (Sugar, Cocoa Butter, Whole Cows' Milk Powder, Flavouring, Emulsifier: Soya Lecithin), Rapeseed Oil, Invert Sugar Syrup, Soya Flour, Salt, Colours: Mixed Carotenes, Lutein; Flour Treatment Agent: L-Cysteine; Concentrated Lemon Juice. ! Allergy advice: For allergens, including cereals containing gluten, see ingredients in bold. Also, not suitable for customers with an allergy to nuts or egg due to manufacturing methods.
- Allergens
- GlutenMilkSoybeans
Additives 12
Overexposure risk is based on EFSA evaluations as recorded by Open Food Facts.
Product details
- Quantity
- 90g (×2)
- Serving size
- 90g
- Labels & certifications
- Vegetarian
- Sold in
- United Kingdom
- Barcode
- 01043686
Prices reported by shoppers
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Frequently asked questions
How many calories are in Custard Slice?
Custard Slice contains 283 kcal per 100 g and about 255 kcal per serving (90g).
How much sugar is in Custard Slice?
Custard Slice has 27.5 g of sugars per 100 g, which is considered high by UK front-of-pack guidelines.
Is Custard Slice healthy?
It has a Nutri-Score of D (A is best, E is worst); it is in NOVA group 4 — ultra-processed food. Scores describe nutritional quality and processing, not suitability for your individual diet.
Is Custard Slice vegan?
Based on its ingredient list, it is not vegan.
What allergens does Custard Slice contain?
According to the label data it contains: Gluten, Milk, Soybeans. Recipes change — always check the package label.
Source: Open Food Facts (ODbL). Last updated March 27, 2026. Spotted a mistake? Edit this product on Open Food Facts. Not medical advice — always check the package label.
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