Coconut Custard Pie

• 5 egg whites
• 2 egg yolks
• 1 prebaked pie crust
• 350 ml cream (heavy)
• 300 ml milk
• 250 gr sugar
• 160 gr coconut (shredded)
• 120 ml cream mixture (hot)
• 120 ml milk in a saucepan with the sugar
• 180 ml milk the cornstarch (cold into)