陆 orange, finely grated zest only
录 tsp bicarbonate of soda
80驳/2戮辞锄 caster sugar
65驳/2鈪搊锄 caster sugar
15驳/陆辞锄 cocoa powder
15驳/陆辞锄 icing sugar
pinch fine sea salt
100g/3oz self-raising flour
30ml/1fl oz sunflower oil, plus extra for greasing
陆 tsp vanilla extract
陆 tsp vinegar, any variety
50ml/2fl oz aquafaba, shop-bought or from a tin of organic chickpeas