Peel the garlic and cut into thin slices. Cut off the tips of the artichokes and stems to a small residue. Remove hard fibres from the stems. Bring plenty of salted water (so that the artichokes are covered afterwards) to the boil.
Season with vinegar, lemon juice, peppercorns, laurel, cloves, rosemary and garlic. Cook the artichokes for about 45 minutes, drain and quarter them. Drizzle with olive oil and serve garnished with lemon.