Plump tubers with knobby branches. Side branches have a milder tangy ginger flavor than the main root, which can have a hot "bite." Grate unpeeled gingerroot, or peel and chop or slice, to season foods such as stir-fried, sauces and baked goods. Wrap tightly in plastic and store in the refrigerator. GROUND: Also called powdered ginger; no substitute for fresh ginger root. STEM GINGER: Ginger root that is preserved and bottled in syrup.