We use both a lemon-infused oil and fresh lemons in this recipe. Meyer lemons are sweeter than Eureka or Lisbon, but typically aren't available in the supermarket frequently. I have a baby Meyer lemon tree and it is one of my favorite things, but since lemons ripen in the winter here in Northern California, I'm typically out of fruit by the time summer rolls around I am plucking from my basil plant to make homemade basil pesto. Nevertheless, the Meyer lemon extra-virgin olive oil I recommend is perfectly complimented by other lemon varieties and your homemade pesto will be delicious no matter what kind of fresh lemons you use.