Line the bottom of a springform pan (26 cm Ø) with baking paper. Put the glaze bag in hot water for about 10 minutes. Fill 100 g cornflakes into a plastic bag, close bag. Coarsely crumble the cornflakes with a dough roll. Stir under the glaze. Pour into the mould as a cake base, press well. Chill for about 30 minutes.
Soak gelatine in cold water. Wash, clean and chop 300 g strawberries. Mix yoghurt, sugar and vanillin sugar. Squeeze the gelatine, dissolve over low heat. Stir in 2-3 tbsp. yoghurt cream, then stir into the rest of the cream. Chill for about 5 minutes until it starts to gel
Whip the cream until stiff. Fold cream first, then strawberry pieces into the cream. Spread on the cake base. Chill for at least 4 hours.
Remove the cake from the mould. Wash, clean and halve 200 g strawberries. Spread on the cake. Decorate with approx. 5 tbsp. cornflakes