It's so easy! I pick fresh basil from my garden, but you can also use basil that you've purchased. I remove the coarse stems and use the leaves in the pesto recipe. In a food processor I combine the ingredients and pulse until I get a nice creamy sauce. At this point I taste the pesto to make sure there is enough salt and oil. If the leaves have less moisture you may need a bit more oil to get the right consistency. Also, depending on how salty your cheese is you may need a bit more salt.