Chocolate and Coffee Classic British Trifle with Custard and Berries

Method

1. Add cocoa powder and instant coffee to the custard mixture while cooking.
2. Prepare sponge cake according to package instructions. Cool completely.
3. In a saucepan, mix milk, sugar, and eggs. Cook until thick, then cool.
4. Whip cream until stiff. Layer cake, custard, cream, and jam in a bowl.
5. Chill 2 hours before serving.