Pineapple/nut Passover Sponge Cake

• 10 eggs
• 10 whites
• 10 sugar
• 4 yolks
• 3/4 potato starch
• 1/4 cake meal
• 130 gr superfine sugar (white)
• 60 gr blanched almonds
• 45 gr pineapple concentr (frozen)
• 1 gr salt