Ginger and garlic science
Ginger and garlic — why they work together
Ginger-garlic paste — the equal-parts combination of fresh ginger and garlic — is the aromatic backbone of most North Indian cooking. The combination is not arbitrary. Ginger and garlic contain complementary aromatic compounds that interact synergistically — each enhancing the other's impact in ways that neither achieves alone.
The Science
Why do ginger and garlic enhance each other's flavour?
Garlic's primary aromatic compounds are organosulfur molecules (allicin and related compounds) — savoury, pungent notes. Ginger's primary aromatic compounds are terpenes (zingiberene) and phenolics (gingerols, shogaols) — spicy, warm, floral notes. These two compound families occupy different regions of flavour space. Together they cover a much broader aromatic range than either achieves alone. In cooking, the sulfur compounds in garlic and the terpenes in ginger also undergo different Maillard reactions, producing a wider range of new aromatic compounds than either would alone.
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Ginger and Garlic — How to Use Each Stage
Raw, paste, and cooked produce different results
- Raw ginger: maximum gingerol content — sharp, hot, floral. Used in chutneys and marinades where fresh heat is wanted.
- Cooked ginger (5+ minutes): gingerols convert to shogaols — warmer, spicier, more complex. The backbone ginger flavour of curry.
- Raw garlic: allicin intact — sharp, pungent. Never add raw garlic to hot oil — it burns before allicin can develop properly.
- Cooked garlic (2–3 minutes in oil): allicin converts to diallyl disulfide — mellower, sweeter, more complex. Standard masala garlic flavour.
- Ginger-garlic paste: the compounds interact during paste storage — developing a more integrated flavour than separately added ginger and garlic.