Place the pistachios, pine nuts, cranberries, garlic, parsley and lemon juice into a food processor and process until very finely chopped. While the food processor is running, slowly drizzle in olive oil.
Season with salt and black pepper to taste.
The pesto should be slightly sweet and salty.
Notes
You could substitute the pine nuts for all pistachios. I personally just like the buttery nutty flavor of the pine nut addition.