Spice

Zingiber officinale

B tier

Zingiber officinale is culinary ginger—the rhizome species behind supermarket hands, dried powder, crystallised slices, and pickled gari. Knobbly “hands” are modified stems packed with gingerols that deliver heat, citrus, and pine; drying converts much of that chemistry toward warmer, woodier shogaols. Within the species, origin and harvest age swing flavour more than most cooks realise: young pale rhizomes are juicier and milder, mature roots fibrous and fiery. Specifying Z. officinale separates true ginger from galangal, torch ginger, and ornamental Zingiber that are not kitchen substitutes. Use fresh for stir-fries, teas, and pastes; dried powder for baking and long-cooked stews where fresh volatility would fade. Store unpeeled rhizomes cool and dry or frozen; refrigeration in sealed plastic can hasten mould on wet skin.