You will need a blender (any kind will do), a standing blender, an immersion blender, or a hand wand. Add olive oil, garlic, pine nuts, red pepper flakes, and basil to your blender and blend to form a paste. Then add beet greens and salt and pepper, just a little at first. Taste the pesto, if it’s to your liking then it’s done! If not, adjust with a little more salt and pepper, red pepper flakes, or parmesan cheese if your diet allows it.