Make the meringues in advance to free up your oven for the sponge.
2 cups of green seedless grapes
1 cup of red grapes
1 cup of green grapes
2 cups ginger ale or ginger beer
2 lemons (one to juice and the other to slice)
Place the seedless grapes in a food processor or blender. Blend until smooth.
Pass through a colander or coarse sieve to obtain the juice.
Combine the grape juice with the lemonade, ginger ale and lemon juice.
Place in a large jug or punch bowl with lots of ice.
Stir in the lemon slices and the red and green grapes.
Serve well chilled.
Credits: Australian Grapes