Using the recipe from http://www.uga.edu/nchfp/publi
First was sterilizing the jars. We boiled them in water for about 15 minutes, while that was going on we zested the lemons. 1/2 cup of lemon zest is a lot of lemon zest! We then mixed it with the sugar and let it sit for 30 minutes. Oh man it smelled so good!