Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make refreshing cold coffee [title] Know that pouring coffee over plain ice cubes often leads to watery, unappealing coffee. [step] The reason why most coffee shops use cold brewing to make iced coffee is that it prevents your coffee from losing flavor to the ice. However, there are several ways to get delicious iced coffee without waiting 12 hours for a cold brew.

Ending1: [substeps] Placing ice cubes in your coffee maker prevents the coffee from freezing in the ice. This approach is described in image ii below. Ending2: [title] Brew your coffee double strength and pour it over a full glass of ice. [step] The simplest way to get great tasting, refreshing cold coffee is to brew it twice as strong and let the ice dilute the coffee. Ending3: [substeps] If you want to try this method, you should do it within two hours of taking your coffee out of the refrigerator. If you regularly use cold coffee over ice, your coffees will probably have more flavor, at least temporarily. Ending4: You don't necessarily have to wait that long, but passing the time can make your iced coffee perfect for your needs. [substeps] Use automatic coffee fountains, draw a pot of coffee to the tap, and bring the water to a boil.

Answer format: ending1/ending2/ending3/ending4