Here is a wonderful blog post to explain how to properly trim and harvest your basil:
http://mybyrdhouse.blogspot.com/2008/07/basil-pruning-tutorial-really.html
So, I started with my lovely pile of basil... and I thought I could walk you through the steps f how I make my pesto. The above blog also has a recipe, but I don't do well with recipes. I'm just a lazy cook.
Step #1: Pick the basil
Here is just an example of what I got off of a "twin" basil plant. That just means that I did a bad job thinning them as seedlings, and just planted two plants in the same hole when transplanting into my raised container. This is a big pile of basil. Just to give you an idea of how big, check out the vitamin water bottle in the top right corner. I still have the plants growing strong outside.
Step #2: Wash the basil
If you grow basil, spinach, or lettuce~ you NEED a salad spinner. I don't even know how much I paid for mine, but it is worth a lot. I hate hitting dirt when eating lettuce or spinach, and it works well for washing basil, too!
Step #3: Get out your ingredients
I am freezing my pesto this time around, so I'm only adding oil to the basil. A good food processor makes a heap of difference when you're making pesto. I borrow my mom's. It's an oldie, but a goodie.
Step #4: Process away!
I use a spatula to scrape the basil leaves down every so often. It smells so good!
Step #6: Freeze
You can either eat it fresh or freeze for later. I am going to add pine nuts and Parmesan cheese when I thaw and use my pesto, but I've heard that the cheese doesn't freeze nicely. I don't know about that for sure, but I don't have any this time around, so I'm not even going to try it.