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: To make the coating for candy apples.
Put all of the ingredients, except for the red gel and any flavorings, into a pot and bring to a boil. It's a lot easier if you use a candy thermometer to keep an eye on the temperature. You want the sugar to hit the "hard crack" stage, usually 300-310 degrees. Just before it does, add your coloring and flavors.
Cook apples, dip in caramel, let cool.