few tsp jam (any flavour)
50驳/1戮辞锄 peanut butter
50驳/1戮辞锄 plain flour
100驳/3陆辞锄 caster sugar (or soft light or dark brown)
25g/1oz cocoa powder
75g/2戮oz unsalted or salted butter, plus extra for greasing
1 free-range egg, beaten
ice cream, cream or custard, to serve (optional)