When you've got leftover egg whites after making ice cream, go ahead and make some sweet, crispy homemade cones to make dessert even better! Mix those egg whites with sugar until smooth, then add milk, vanilla, melted butter, cold water, flour and salt. Spoon batter onto a Silpat-lined baking sheet and bake until set, wrap around your house-made foil molds and cool until crisp. So awesome and delish, you'll never look back! Get Chef John's recipe for Ice Cream Cones.