Strawberry Lemondrift Pie

• 1 gelatin (envelope unflavored)
• 1 cooled pie crust (baked)
• 1 powdered sugar
• 475 ml whipping cream
• 300 gr strawberries (fresh)
• 130 gr sugar
• 120 ml milk
• 60 ml lemon juice (fresh)
• 9 gr lemon peel (grated fresh)