Provide advice on how to accomplish the following goal. Give ONLY the advice, no other words or explanation.
For example:

Answer: <advice, as short as possible; a single sentence!>.

Goal: How to tell if your pan is hot enough.
A good way to test the heat of your pan is to drip a drop of water into the pan. If it sizzles your pan is hot enough. If it does not sizzle continue to heat your pan until it does.
Test with a drop of water. It should sizzle and dance.