Cocoa Cream Filled Sponge Cake

• 7 eggs separate out yolks
• 1/4 cake meal
• 1/4 potato starch
• 250 gr sugar
• 240 ml whipping cream (cold)
• 100 gr sugar
• 60 gr almonds (ground)
• 45 gr strawberry preserves see note
• 30 ml water
• 28 gr cocoa