Watermelon Chiffon Pie – Garden & Gun

Ingredients

• 2 cups all-purpose flour
• 1 tsp. kosher salt
• 2 tbsp. sugar
• 3/4 cup (1 1/2 sticks) cold butter, cubed
• 1 egg, lightly beaten
• 2 tbsp. + 2 tsp. cold water
• 1/2 tsp. white vinegar
• 2 3/4 cups watermelon puree (from about 6 cups fresh melon)
• 3/4 cup sugar
• 2 tbsp. unflavored gelatin
• 2 egg whites
• 1 cup heavy cream