I've made it with those instant coffees. They're usually good for 6-8 oz. of water. Just boil a little water (1 or 2 oz), stir the coffee in, then add cold water. I usually put some almond milk and splenda or sugar in with mine. You can also use sugarfree syrups for a low calorie drink. Pour over ice once you mix everything else together, or you can use a drink shaker.
Current Goal: Wear Size 10 Pants by July 1st