Lemon Snow with Custard Sauce | America's Test Kitchen

Ingredients

• 1/4 cup cold water
• 2 teaspoons unflavored gelatin
• 1 cup boiling water
• 1 cup (7 ounces/198 grams) sugar
• 1 teaspoon grated lemon zest plus 1/3 cup juice (2 lemons)
• Pinch salt
• 3 large egg whites
• 3 large egg yolks
• 1/4 cup (1 3/4 ounces/50 grams) sugar
• 1 1/4 cups whole milk
• 1 tablespoon unsalted butter
• 1 1/4 teaspoons vanilla extract