SP also helps cake to rise evenly and yields more delicate texture.Topping: 100 g butter100 g sugar2 1/2 tbsp of all-purpose flour45 g unsweetened evaporated milk (or whole milk)125 g of cashew nuts1/4 tsp of butter extract (optional)(Next time, I will double up topping. )Preheat oven to 220 C. Put everything except nut and butter extract in double boiler until sugar dissolves.