When you buy cook-and-serve pudding, it's always too watery. Let's say you want to make pudding cups or pudding pops. The first thing you need to do is to go to your kitchen and put the pudding in a pot on the stove and heat it up. Once the pudding becomes too hot, you need to add a bit of cold water to cool it off. Once the pudding cools down, you can add it to your favorite dish. If you are not going to use the cooked pudding right away, you can store it in an airtight container for a few days. It's important to know that the pudding needs to be cooked at the right temperature.