Lemon and Lime Ginger Crunch

Method

1. Put the gingerbread in a polybag and crush them with a rolling pin — evenly but not too finely. Mix them into the melted butter. Press 200g (7oz) of the mixture — just over half of it — into the base of the tin. Chill.
2. Whip the cream in a bowl and stir in the condensed milk, lemon and lime zest and 10-12 tablespoons juice. Spoon the lemon-and-lime juice mixture over the biscuit base, smooth the top and sprinkle with the rest of the gingerbread mixture. Chill overnight until set firm.
3. Take out of the tin and slice for serving.