Melt the butter in a small pot and let it cool down a little. Finely crumble 150 g cantuccini in the universal chopper, mix with butter. Spread the bottom of a springform pan (26 cm Ø) with oil. Put crumb mixture into the form and press it to a flat bottom. Chill for about 30 minutes. Finely puree 500 g strawberries and 50 g sugar.
Cut out balls from the melon. Weigh 250 g melon balls. Cover and chill 50 g balls. Soak gelatine in cold water. Whip 250 g and 350 g cream separately until stiff. Mix 150 ml buttermilk with strawberry puree. Mix 350 ml buttermilk with 75 g sugar and juice. Squeeze 6 sheets of gelatine, dissolve carefully and stir into the white cream, chill. Dissolve 8 sheets of gelatine as well, stir into the strawberry cream, chill. When both creams start to gel, fold 200 g melon balls and 350 g cream into the white cream, 250 g cream into the strawberry cream. Spread about half of the white cream on the base and smooth it down.
Mix 350 ml buttermilk with 75 g sugar and juice. Squeeze 6 sheets of gelatine, dissolve carefully and stir into the white cream, chill. Dissolve 8 sheets of gelatine as well, stir into the strawberry cream, chill. When both creams start to gel, fold 200 g melon balls and 350 g cream into the white cream, 250 g cream into the strawberry cream. Spread about half of the white cream on the base and smooth it down. Pour half of the strawberry cream on top and smooth it down as well. Pour the rest of the cream alternately on top. Chill for about 2 hours. Wash, clean and slice 100 g strawberries. Coarsely crumble 50 g cantuccini. Decorate the cake with melon balls, strawberry slices and crumbs put aside
Pour half of the strawberry cream on top and smooth it down as well. Pour the rest of the cream alternately on top. Chill for about 2 hours. Wash, clean and slice 100 g strawberries. Coarsely crumble 50 g cantuccini. Decorate the cake with melon balls, strawberry slices and crumbs put aside
2 1/4 hours waiting time