This is the basic recipe for McDonald's iced coffee. NOTE: We use Dunkin Donuts coffee beans (available at most supermarkets in the USA now) we ground at the store and brewed in a French press. If you can't find that, I recommend that you use a fairly mellow light roast. Millstone Kona Blend or Hawaiian blend are also great. You won't need a French press, but obviously, well made coffee couldn't hurt this. If you follow the directions and use quality ingredients, you'll wonder why you're paying $2.50 or more for iced coffee anywhere else. Feel free to double or quadruple the recipe if you have guests.