1. Add 45g of caster sugar to 65g of brown sugar and 85ml of butter liquid, mix well, then add 1 egg yolk, and mix well
2. Sift in 180g low-gluten flour, mix well, then add 35g chocolate beans, mix well
3. Brush the inner wall of the cup with butter to prevent sticking, put in a small portion of the kneaded dough and press it into a cup shape
4. Put it into the preheated oven, heat up to 180°C, lower heat to 160°C, bake for 40 minutes, take out the cup, let it dry until it is not hot, and then demould
5. 80g of chocolate is melted by heating in water, brush the chocolate liquid on the inner wall of the baked cup biscuits
6. Wait for the chocolate liquid to solidify, pour in the milk, and enjoy
