Galangal in Indonesian Cooking: Lengkuas, Uses and Flavour
Galangal, called lengkuas in Indonesian, is a knobbly rhizome of the ginger family and a core flavour in many Indonesian dishes. It has a pale, smooth skin, a hard and fibrous flesh and a sharp, piney aroma that is quite different from ginger. Cooks slice it, bruise it or pound it into spice pastes, and the flavour it adds is clean and sharp with a faint citrus note and very little heat. If you want to know what galangal is, how it differs from ginger, where it appears in Indonesian cooking and how to buy and store it, the sections below cover each of those in turn.
Galangal in Indonesian cooking: what it is and what it does
The plant is Alpinia galanga, and it goes by several names in English, including greater galangal and blue ginger. In Indonesia it is simply lengkuas, and the name is so common that most home cooks do not think of it as a separate spice at all. It is a fresh aromatic, bought and used in the rhizome form, and it is one of the flavours that cannot easily be replaced once a dish depends on it. Galangal does not give a dish heat in the way chilli does. Its contribution is a bright, resinous lift that runs through the whole dish and stays visible even after long cooking.
Galangal belongs to a group of rhizomes that are often confused with one another. Its closest relative in the Indonesian kitchen is the Kaempferia rhizome known as cekur in some regions, a different plant with a smaller, more earthy rhizome that is used in its own set of dishes and in traditional drinks. Keeping the two apart matters, because a recipe that calls for one will taste quite different if the other is used.
How galangal differs from ginger
The two rhizomes look alike at first, but they cook differently and taste different. Galangal has smoother, paler, pinkish-tan skin with tighter nodes, while ginger is knobbier and browner. Galangal is harder, woodier and more fibrous, so it resists grating in the way ginger does. Ginger tends to give warmth and a soft sweetness, while galangal gives a sharper, cleaner note with a pine and citrus character and very little heat.
A cook who swaps one for the other will notice the change, especially in soups and curries, where galangal holds its shape and flavour through long simmering. Ginger can dominate a broth in a sweet, warm way, while galangal stays sharp and fresh. Wild ginger relatives used in some regional kitchens behave differently again, as the lempuyang ginger page explains. That is why Indonesian kitchens keep the two separate, even though both belong to the same family and both are sold in the same markets.
Fresh galangal has an aroma that many cooks compare to fir or pine needles, and the scent is strongest when the rhizome is freshly cut. Dried galangal, which is sold in some markets, is more spicy and sweet-aromatic, and it is closer to cinnamon in character. Dried pieces are a different ingredient rather than a shortcut, and a fresh rhizome is the better choice for the sharp flavour most Indonesian dishes expect.
Galangal in spice pastes for rendang and sambal
In Indonesian cooking, galangal is pounded into the base spice paste, the bumbu, with shallot, garlic, chilli, turmeric and lemongrass. The paste is fried before any liquid is added, and the galangal’s sharpness softens into the dish as the oil and spices cook together. The paste is the foundation of many rich dishes, and the galangal is one of the flavours that gives the paste its character.
Rendang, the slow-cooked beef dish associated with West Sumatra, is commonly built on a paste that includes galangal, and the flavour it brings is clean enough to cut through the richness of the coconut and the meat. Sambal, the chilli condiment that appears at almost every meal, can also include galangal in some regional versions, where it adds a clean, sharp layer under the heat. The coconut milk page explains the base that many of these curries are built on, since galangal and coconut milk are often used together.
Galangal in coconut curries and soups
In coconut curries, the pounded paste gives the sauce its depth, and a few thin slices may be added whole so their flavour seeps out during simmering. The slices are usually removed before serving, because the fibres stay tough even after long cooking. In a rich coconut dish, galangal balances the sweetness of the milk and keeps the sauce from tasting flat.
Galangal also has a role in soups and broths. Sliced thinly and simmered in a clear or lightly coloured broth, it adds a clean, sharp note that suits chicken, fish and vegetable soups. Cooks often bruise the slices with the flat of a knife before they go into the pot, so the flavour comes out faster and the broth tastes brighter. The slices are then strained out or left to be pushed aside when the soup is served.
Galangal in fish dishes and marinades
Galangal has a particular place in fish dishes. In most kitchens it is used to cut through the strong smell of fresh seafood, which is one reason cooks reach for it so often when the fish is a little richer or oilier than usual. Pounded galangal is rubbed into fish before grilling or frying, so the flavour sits close to the flesh and does not wash out in the cooking. A fish dish built on a paste of galangal, turmeric and shallot tends to keep its clean, lifted taste from the first bite to the last.
In marinades for chicken and meat, the same principle applies. A small amount of pounded galangal in a marinade adds a bright edge that keeps the dish from tasting heavy, and it pairs well with lime or tamarind when those are used as the sour element.
How to prepare galangal before cooking
Galangal does not need to be peeled in the way ginger does, because its skin is thin and smooth and can be scrubbed clean. Many cooks simply wash the rhizome and cut it, though some prefer to scrape away the thin outer layer with a spoon or the back of a knife. Slices are cut thin for soups and fine for pastes, and the tough fibres are the main reason the rhizome is sliced or pounded rather than eaten raw.
For a pounded paste, the slices are sometimes dry-fried or salted first to make them easier to grind, and some cooks grind them with a little of the other aromatics so the mortar does not clog. Once cut, galangal dries out and hardens, so it is best prepared shortly before use. Pieces kept in the fridge should be wrapped so that they do not dry or pick up the smell of other foods.
Where galangal is grown and how it is sold
Galangal grows in gardens and village plots across Indonesia, and it is a common crop where families keep it for their own cooking. A few rhizomes are often planted near the house, so the cook can dig up what is needed for the day. In markets, galangal is sold as whole rhizomes, sometimes with the pale shoots still attached, and it is usually piled with the other fresh aromatics such as turmeric, ginger and lemongrass.
When buying, look for firm, smooth pieces with a bright, pale skin and tight nodes. Avoid rhizomes that are soft, shrivelled or spotted, because they have lost much of their aroma and their fibres may have started to rot. Specialty Asian grocery shops in many cities also sell fresh galangal, and some carry frozen slices, which keep much of their flavour for use in cooking.
How to store galangal at home
Fresh galangal keeps best when it is wrapped in paper towel and placed inside a sealed bag in the fridge, where it lasts for a few weeks. The paper towel takes up the moisture that would otherwise soften the skin. For longer storage, the rhizome can be frozen whole or sliced, and frozen galangal keeps its flavour well enough for most cooking. Once frozen, slices can go straight into a broth, while whole pieces are easier to grate or pound after a short time at room temperature.
Dried galangal should be kept in a sealed container away from light and heat, and it is best used within a reasonable time because its aroma fades with age.
Substituting ginger for galangal
Ginger is an imperfect stand-in, and it works best only in dishes where a warmer, softer flavour is acceptable. A cook who has no galangal can use a little ginger, but should expect the sharpness and the pine note to be missing. For a curry paste, using ginger in a smaller amount than the galangal called for, and adding a small amount of lemongrass or lime zest, gets closer to the intended taste. Kencur is a closer relative to the flavour some dishes use, though it is a different plant and tastes earthier, so it should be treated as a related seasoning rather than a direct replacement.
The Indonesian spices and ingredients hub lists the other aromatics that work alongside galangal in the kitchen, and it helps a cook plan a full set of pastes before starting a dish.
Questions cooks ask about galangal
Can galangal be eaten raw?
Galangal is too hard and fibrous to eat raw in the way that a salad ingredient would be eaten. It is sliced thinly and cooked in soups, or pounded and fried into a paste, and the flavour does its work in the cooking rather than on the plate.
Do you need to peel galangal?
Peeling is not usually necessary, because the skin is thin and the rhizome can be scrubbed clean. Some cooks scrape away the outer layer for a neater look in a soup or a paste.
Is galangal the same as kencur?
No. Galangal is a larger, sharper rhizome, while kencur is a different plant with a smaller, earthier flavour. Both are part of the Indonesian kitchen, and each has its own place in the dishes that use it.
Related guides: What rebung is and how it tastes, bawang merah, Ways daun pepaya appears in Indonesian meals.