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Choose a  clean, 1/2-ounce (15-milliliter) tin or jar to store your lip balm in. Add about 1 tablespoon (15 grams) of petroleum jelly into the container. Vanilla, mint, or strawberry are all great choices. You can even add a pinch cocoa powder if you want chocolate-flavored lip balm. If you do this, however, it would be a good idea to add a drop of vanilla extract for sweetness as well. Keep stirring until the color and texture are consistent. Be sure to scrape the sides of the tin often so that nothing gets left un-mixed. Run your finger or the back of a spoon over the top of your lip balm until it is nice and smooth. You can skip this step if you are impatient or don't care about the finish. Once you have everything stirred and smoothed down, the lip balm is ready to use! Apply it to your lips with your finger, and cover it with a lid when you are not using it. There is no need to refrigerate the lip balm.

Summary:
Fill a small container with petroleum jelly. Add 2 to 3 drops of baking essence or extract. Stir the mixture with a toothpick. Smooth the balm down for a nicer finish. Use the lip balm.