Martina,
I don't have a melon type dessert but this is really a spectacular summer dessert if you care to try it.

A Terrine of Summer Fruits

Recipe By : Delia Smith's Summer Collection
Serving Size : 8 Preparation Time :0:00
Categories : Desserts Fruit

Amount Measure Ingredient -- Preparation Method
-------- ------------ --------------------------------
15 ounces sparkling rose
3/4 ounce gelatin -- about 2 pkgs
1 tablespoon lime juice
12 ounces strawberries
8 ounces raspberries
12 ounces other berries

Gently mix fruits together in large bowl. Heat half of rose wine to simmer; then whisl in sugar and gelatin. When thoroughly dissolved, add remaining wine and lime juice. Allow to cool while arranging berries in loaf pan (preferably not aluminum). Pour all but 5 oz of the liquid over the fruit. Lay cling film over pan, place another pan directly on top and weight with cans of vegs. Put into fridge for about an hour or til set. Warm remaining wine mixture and add to surface; reweight and return to fridge.

Serve with chilled cream, creme fraiche or Greek yogurt.

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