1 tsp bicarbonate of soda
125g/4陆oz light brown sugar
55g/2oz cocoa powder
35驳/1录辞锄 ground almonds
125ml/4fl oz neutral oil, such as sunflower
录 tsp salt
70驳/2陆辞锄 gluten-free flour
1 free-range egg
125ml/4fl oz full-fat milk
100ml/3陆fl oz brewed coffee, cooled (not espresso)