Costco-Style Cheesecake

Ingredients

• 1 1/2 cups graham cracker crumbs
• 2 tablespoons sugar
• 1/2 teaspoon cinnamon
• 1/4 cup unsalted butter, melted (1/2 stick, or 4 Tbl.)
• 6 eggs, separated
• 24 ounces cream cheese, at room temperature
• 1 cup sugar
• 1 pint sour cream
• 1/4 cup flour
• 1 tablespoon pure vanilla extract
• 1 tablespoon lemon extract