Put the pasta and the garlic in a pan, boil for about 7 min, add the spinach and boil for another 5 min
Put the spinach, the garlic, parmesan cheese, vinegar, olive oil, salt, pepper, and some water from boiling the pasta in a blender and blend.
Put the sauce in the pasta and mix
Put the pasta on a plate with some of the ricotta cheese on top.