- STEP 1
Using a fork, whisk all the ingredients, aside from the chocolate truffle, with a pinch of salt in a large mug (ours was 350ml).
- STEP 2
Push the chocolate into the centre of the batter, and microwave the cake on high for 45 secs until cooked on the outside with a liquid molten centre. Serve hot with ice cream or cream, if you like.