Tea Cakes (Sponge)

Instructions

1. Have these ingredients ready: eggs; flour; sugar; the grated rind of lemons or naartje-peel (tangerine orange).
2. Whisk the yolks well with the sugar till it rises in bubbles, then whisk the whites stiffly.
3. Then add the flour and the peel.
4. Bake in little tins, well buttered, in a moderate oven for half an hour.