Start by dissolving 1 packet of flavored jelly powder in boiling water, following the instructions on the packet. Stir well until completely dissolved, then pour the mixture into a shallow dish. Place it in the refrigerator and allow it to set for about 2 hours until firm. Chilling ensures the jelly holds its shape when added to the trifle.

Cut a store-bought or homemade sponge cake into small squares or slices. Arrange a single layer at the bottom of your trifle bowl, pressing it down lightly. For extra flavor, drizzle the cake with sherry, fruit juice, or a flavored syrup. This step enhances the overall taste and keeps the sponge moist.

Once the jelly is completely set, cut it into small cubes using a knife or spoon. Evenly distribute the jelly cubes over the sponge cake layer, ensuring full coverage. The jelly adds a fun, fruity element to the trifle, creating a contrast of textures between the soft cake and the firm, wobbly jelly.

Prepare or use pre-made custard and gently pour it over the jelly layer, making sure it spreads evenly. If using homemade custard, allow it to cool slightly before adding it to prevent melting the jelly. The custard provides a creamy, rich layer that binds the flavors together.

In a mixing bowl, whip 1 ½ cups of heavy cream with 2 tablespoons of powdered sugar until soft peaks form. Be careful not to overwhip, as the cream should be light and airy. Spoon or pipe the whipped cream over the custard layer, spreading it smoothly to create an elegant finish.

Decorate the trifle with fresh fruits like strawberries, raspberries, or kiwi slices. Optionally, sprinkle chocolate shavings, chopped nuts, or colorful sprinkles for added texture and visual appeal. Cover the trifle with plastic wrap and refrigerate for at least 1 hour before serving, allowing the flavors to meld beautifully.