Strawberry cake
A strawberry layer cake using concentrated fruit purée.
Method
01 · Reduce fruit
25–35 min or longerUse: Fruit
Purée strawberries; simmer until reduced to 135 g. Cool completely.Ready when: Thick, concentrated purée.

01 Reduce fruitReduce the strawberry purée to 135 g, then cool it completely. 02 · Prepare
5 minUse: Equipment
Heat the oven. Grease and line two 23 cm round tins.Ready when: Pan ready before mixing.

02 PrepareGrease and line two 23 cm round tins before mixing. 03 · Mix dry
1 minUse: Dry
Whisk the dry ingredients.Ready when: Even colour.

03 Mix dryWhisk the flour, baking powder, soda and salt evenly. 04 · Cream
5 minUse: Cream, Wet
Beat butter and sugar fluffy; beat in egg whites, sour cream and vanilla.Ready when: Light mixture.

04 CreamBeat the butter and sugar, then add the whites, sour cream and vanilla. 05 · Combine
2 minUse: Reduce fruit, Mix dry, Cream, Milk
Mix dry ingredients and milk into creamed mixture briefly, then fold in reduced fruit.Ready when: Even pink batter.

05 CombineMix in the dry ingredients and milk briefly, then fold in the reduced fruit. 06 · Bake
24–25 minUse: Combine
Transfer to the prepared pan and bake.Ready when: Centre springs back; skewer has crumbs, not wet batter.

06 BakeDivide the batter between the prepared tins and bake until set. 07 · Cool
Until completely coolUse: Bake
Cool in tins for 1 hour, then unmould.Ready when: Stable layers.

07 CoolCool in the tins for an hour, then unmould the layers.
What to look for
| Stage | Look / feel for | Needs attention |
|---|---|---|
| Combine | Even pink batter. | Stop at this cue rather than relying only on elapsed time. |
| Bake | Centre springs back; skewer has crumbs, not wet batter. | Stop at this cue rather than relying only on elapsed time. |
| Cool | Stable layers. | Stop at this cue rather than relying only on elapsed time. |
Troubleshooting
| If you see this | Likely cause | What to do now | Next time |
|---|---|---|---|
| Sunken centre | The batter was underbaked or lost too much air. | If still in the oven, continue until the centre is set. | Use the stated pan and avoid opening the oven early. |
| Dry crumb | Excess flour or baking time. | Serve with an appropriate cream or filling. | Weigh flour and check doneness at the low end of the range. |
Finish with library cream-cheese icing.
Other approaches to this recipe
| Cook / recipe | Use | What differs |
|---|
The working ingredients and method form one recipe. Different formulas are compared without averaging their quantities or rise schedules.
