Broccoletti can be kept in the refrigerator for 5 days in a plastic bag. If blanched for a few minutes, they can also be frozen. To clean them, you need to wash them under running water and cut the tops with scissors. The hardest outer part must be removed with a potato peeler. You can cook tops and stems by scalding them in boiling water and sautéing them in a pan. The smaller and tender florets can be used raw to prepare a pesto.