Kencur vs Ginger
The short answer
Kencur is not young ginger, which is the commonest assumption about it. It is Kaempferia galanga, a separate genus, and its character comes from ethyl cinnamate — camphorous, medicinal, faintly like a pine resin — where ginger's comes from gingerol and is hot and sweet. Indonesian and Malay cooking uses them for different jobs and often together. Substituting ginger gives the pungency and none of the camphor.
Side by side
| Kencur | Ginger | |
|---|---|---|
| Botanical identity | Kaempferia galanga L. | Zingiber officinale Roscoe |
| Part used | rhizome | rhizome |
| Origin | South and Southeast Asia, with cultivation concentrated in Indonesia — Java above all — and extending through Malaysia, southern China, Thailand and southern India. | Maritime Southeast Asia. The species is unknown as a wild plant, so its precise origin is inferred from its relatives and from the documentary record rather than observed. |
| Flavour notes | camphorous, medicinal, balsamic, faintly bitter, clean | pungent, citric, warm, woody, sweet, green when fresh |
| Heat | Scoville does not apply | Scoville does not apply |
| Flavour | Camphorous, faintly bitter, and clean rather than warming. It has almost none of ginger’s sweetness and none of galangal’s citrus. Used in quantity it dominates, which is why Javanese cooking pairs it with palm sugar and tamarind, both of which give it something to push against. | Pungent and warming in both forms, but not the same warmth. Fresh ginger is sharp, juicy and lemony with a clean burn that fades; dried ginger is hotter in a flatter, more persistent way, with the citric top notes gone and a woody sweetness behind. This is a chemical change rather than a matter of concentration, which is why no quantity of ground ginger makes a dish taste of fresh ginger. |
| Aroma | Strongly camphorous and medicinal, with a sweet balsamic edge and something of pine — closer to a herbal preparation than to a kitchen aromatic on first encounter. It is markedly more assertive than either ginger or galangal at the same weight. | Fresh ginger is bright, citric and green, dominated by zingiberene and citral. Dried ginger keeps a woody, warm-spicy aroma but loses most of the citric lift — the difference is obvious with both jars open at once. |
Which should you buy?
Kencur
Fresh where a paste or a drink is being made, dried where a poaching liquid is. This is one of the few fresh rhizomes in the catalogue where the dried form is not a compromise: the dominant compound survives drying, so dried kencur remains recognisably itself in a way dried fingerroot does not. Ground powder fades faster and is worth buying in small amounts.
Ginger
This is the one spice in the dataset where the question is not really whole versus ground. Buy fresh ginger for cooking and ground ginger for baking, and keep both: they are different ingredients that share a name. Whole dried rhizome is a third thing again, worth having only if you want to grate your own and are prepared for how hard it is. Grinding dried ginger at home is genuinely difficult and rarely worth it.
Full detail on kencur and ginger, including evidence grades and sources for every claim above.