While the freekah is cooking, wash and dry the produce and herbs. Husk the corn, remove the silk and rinse. Cut the corn off the cob and set aside. Peel and mince the garlic, set aside. Peel and mince the shallots (you need 2 tbsp); place in a small bowl with the vinegar. Finely chop the parsley, leaves and stems and remove the leaves from the marjoram, discarding the stems.