How is the flavor contribution of the ginger rhizome characterized compared to the leaves?
The rhizome provides heat and pungency, while the leaves offer aroma and moisture retention
There is a clear division of flavor labor between the two usable parts of the ginger plant. The underground rhizome concentrates the active compounds responsible for the characteristic 'heat' and intense pungency that seasons the dish. Conversely, the above-ground leaves possess a much milder flavor profile, contributing only a subtle, fresh ginger aroma. When used as a wrapper, the leaves function primarily to infuse a gentle fragrance and help maintain moisture during cooking processes like steaming, making them unsuitable for substitution when a recipe demands the strong, spicy kick of the rhizome.

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Using all parts of the ginger plant: Ginger leaf tea and ... - YouTube