Fold half into the custard. Coarsely break 6 of the biscuit and place in a trifle bowl. Add half the rhubarb. Spread over half the custard cream and then slice up half the jelly. Repeat and then ...
But according to the store, this isn't just any old dessert or trifle. This one is deluxe (you'd bloody hope so) boasting "generous layers of strawberry marsala jelly, lemon curd, strawberry gel ...