Baking Substitutions
Find substitutes for 8 common baking ingredients with precise quantities and notes on how the substitution affects the final result.
Why substitutions matter in baking
Baking is a chemical process, each ingredient plays a specific role. A good substitution replaces that role as closely as possible. For example:
- Eggs provide structure (protein), moisture, and leavening (air). Substitutes must replicate at least one of these roles.
- Butter provides fat (for tenderness and flavor), moisture, and helps with browning. Substitutes vary widely in flavor impact.
- Baking powder produces CO₂ for leavening. The baking soda + acid substitute mimics this reaction.
Common egg substitutes
| Substitute | Equivalent to | Best for |
|---|---|---|
| 1 tbsp ground flaxseed + 3 tbsp water | 1 egg | Dense baked goods (muffins, cookies) |
| 60g unsweetened applesauce | 1 egg | Moist cakes and quick breads |
| 3 tbsp aquafaba (chickpea liquid) | 1 egg | Cakes, cookies, meringue (beaten) |
| ¼ cup silken tofu (blended) | 1 egg | Dense, moist baked goods |
| 1 tsp baking soda + 1 tbsp vinegar | 1 egg | Light cakes, quick breads |
Using the filters
- Vegan: shows alternatives free of eggs and dairy
- Gluten-free: shows flour alternatives for gluten-free baking
- Some substitutions affect texture or flavor, notes explain the tradeoffs
UK-specific ingredients and their substitutes
British baking recipes use several ingredients that have no direct US equivalent, and vice versa. These cause the most confusion when adapting recipes between the two:
| UK ingredient | US equivalent or substitute | Notes |
|---|---|---|
| Caster sugar | Superfine sugar (sometimes sold as "baker's sugar") | UK caster is finer than US granulated but coarser than powdered. Blitz US granulated in a food processor for 30 seconds as a substitute. |
| Self-raising flour | Plain flour + 2 tsp baking powder per 150g | Very common in UK sponge recipes. Not widely sold in the US. Make your own: 120g plain flour + 1.5 tsp baking powder + pinch of salt. |
| Double cream | No exact US equivalent | Double cream = 48% fat. US heavy cream = 36%. For whipping: use heavy cream. For pastry cream or ganache: add 1 tbsp unsalted butter per 100ml to US heavy cream to approximate richness. |
| Single cream | Light cream or half-and-half | Single cream = 18% fat. US light cream = 18-30% fat. For cooking sauces, substitution is direct. |
| Golden syrup | Light corn syrup + 1 tsp lemon juice | Golden syrup (Lyle's) has a distinctive buttery flavour with no direct US substitute. Corn syrup is milder. For toffees and flapjacks, the flavour difference is noticeable. |
| Treacle / black treacle | Unsulfured molasses (closest match) | Black treacle has a very strong, bitter flavour. US molasses is similar but less bitter. Use 75% of the quantity stated. |
| Plain flour | All-purpose flour (US) | UK plain flour has slightly lower protein (9-10%) than US all-purpose (10-12%). For most baking, direct substitution works. |