Homemade Marshmallow Fluff

Recipe from Kitchn Makes 2 to 3 cups 9 oz water (1/4 cup plus 2 tablespoons) 3/4 cup granulated sugar 3/4 cup light corn syrup 4 liquid ounces egg whites (from about 3 large eggs) 1/2 teaspoon cream of tartar Pinch salt 1 1/2 teaspoons pure vanilla extract Instructions Place the water, sugar, and corn…