green gel food colouring
red gel food colouring
40g/1陆oz instant porridge oats, blitzed in a food processor
185驳/6陆辞锄 plain flour
rice flour, for dusting
85g/3oz fine semolina
100驳/3陆辞锄 caster sugar
陆 tsp cream of tartar
500g/1lb 2oz icing sugar
陆 tsp table salt
175g/6oz unsalted butter, softened
50ml/2fl oz malt whisky