The recipe for homemade coffee syrup makes about 2.5 to 3 cups so you will have extra. This syrup is best stored in a sealed container in the refrigerator and used within a week. Once cooled it may form crystals but as soon as you add it warmed up all the crystals are gone. This extra syrup is delicious added to muffins, your morning coffee, added to mixed cocktails or even a topping to ice cream.