Vegan mug cake

Put 3 tbsp dairy-free milk in a microwave-safe mug, add a pinch lemon zest and 1 tsp lemon juice and leave to sit for 2-3 mins. It may start to look a bit grainy, as if it has split, but that’s fine. Stir in 1 tbsp sunflower oil, 4 tbsp self-raising flour, 2 tsp caster sugar and a pinch bicarbonate of soda. Mix well with a fork until smooth. Drop in 4 fresh or frozen raspberries then microwave on high for 1 min 30 secs, or until puffed up and cooked through.