Peel the kiwis and cut into slices. Wash the strawberries, drain well and clean. Halve or quarter the strawberries. Mix kiwis, strawberries, lemon juice and 3 tablespoons of sugar and let stand for about 10 minutes.
Place eggs, 75 g sugar, grape juice, almond liqueur, cornstarch and grated lemon peel in a tall narrow pot and mix. Then beat with the whisk of the hand mixer at medium heat until thick and frothy (rises in the pot and becomes thick).
Remove the cream from the heat and continue beating for another 2 minutes. Then fold the ground almonds into the cream. Divide the kiwi-strawberry salad into 4 greased, ovenproof moulds (approx. 15 cm Ø) and add the almond foam.
Sprinkle with almond flakes and gratinate under the preheated grill for 2-3 minutes. Dust with icing sugar and serve immediately decorated with lemon balm.