Plums Imperfect is low GI making them a great source of long-lasting energy and a perfect pick-me-up. A good source of fibre, vitamin C and potassium. Great packed into the kids lunch boxes, in salads or desserts, or as part of a cheese platter. A good source of vitamin C and dietary fibre with some vitamin B6 and potassium.How to PickChoose grapes that are plump, full-colored and firmly attached to their stems.How to StoreStore unwashed grapes in an airtight container or in a sealed plastic bag in the fridge. For longer-lasting grapes, wash only just before serving.