Product guide
Boesenbergia rotunda
Krachai root ground fine — peppery and citrus-bright, with a ginger warmth narrower and sharper than ginger itself.
Botanical story · current research
Fingerroot is a low tropical ginger whose underground rhizomes spread in narrow finger-like clusters. Boesenbergia rotunda has a bright aroma combining pepper, citrus and warm ginger, but it is botanically and sensorially distinct from common ginger and galangal. The tender rhizome carries the plant’s most recognisable culinary character.
Boesenbergia rotunda
Southeast Asia
Known as krachai in Thailand, fingerroot is a familiar ingredient in curry pastes, fish dishes, soups and stir-fries. It is especially associated with Thai khanom jeen sauces and with regional preparations where its lifted, peppery freshness cuts through rich coconut or savoury flavours. In Indonesia it is also known as temu kunci and belongs to the wider aromatic rhizome pantry.
Rhizome · powder
Fresh fingerroot is sliced, shredded or pounded into a paste; dried powder offers the same botanical identity in a more concentrated and convenient form. Powder works well in marinades, curry bases and seasoning blends but lacks the juicy texture of fresh rhizome. Start with a small amount and build until the citrus-pepper aroma is clear.
Latest useful research
We prioritise the newest credible source we can find and state clearly whether it is human, animal, laboratory or review evidence.
Current comprehensive review; much evidence remains preclinical.
Open the research ↗A study of an extract, cell or animal model is not the same as eating or drinking the plant. It can still be valuable evidence when described accurately.
From plant to kitchen
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How to prepare
Begin with ½ teaspoon for two portions; krachai is assertive and easy to overdo.
Work it into a curry paste, or fry it briefly in oil with garlic before the liquid goes in.
For soups, stir it in during the last five minutes so the citrus note survives.
Ways to use it
Further watching & reading
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