Two Rhizomes, Two Distinct Personalities
Walk through an Indonesian market and you will almost always find ginger (jahe) and galangal (lengkuas) displayed side by side — similar in appearance, yet meaningfully different in character. Both belong to the Zingiberaceae family, both are used extensively in jamu, and both are essential components of Indonesian cuisine. Yet they are emphatically not the same plant, and understanding their differences will make you a more confident and effective herbalist in the kitchen.
At a Glance: Side-by-Side Comparison
| Feature | Ginger (Jahe) | Galangal (Lengkuas) |
|---|---|---|
| Latin Name | Zingiber officinale | Alpinia galanga |
| Skin Colour | Pale yellow-beige | Pinkish-white to cream |
| Flesh Colour | Pale yellow | White to cream |
| Texture | Softer, juicier | Firmer, woodier |
| Flavour | Warm, pungent, slightly sweet | Sharp, piney, camphor-like |
| Aroma | Warm and spicy | Citrusy, medicinal, floral |
| Best Used | Fresh, dried, powdered | Mostly fresh; also dried slices |
Ginger in Jamu: The Warming Catalyst
Ginger is one of the most versatile herbs in the jamu tradition. Its primary role is as a warming agent — in Javanese humoral medicine, many illnesses and states of discomfort are attributed to "cold" imbalances in the body, and ginger's warmth is used to counteract this.
Key traditional uses include:
- Relieving nausea, including morning sickness (in small, food-level quantities)
- Warming the body during cold or rainy season
- Stimulating circulation, particularly to the extremities
- Easing joint stiffness and muscle aches
- Supporting respiratory health as part of multi-herb preparations for colds and flu
In jamu recipes, both young ginger (jahe muda — milder, more floral) and old ginger (jahe tua — hotter, more pungent) are used, often for different purposes. Young ginger is preferred for drinks consumed daily; old ginger is used in more intensive therapeutic preparations.
Galangal in Jamu: The Sharp Healer
Galangal has a harder, woodier texture than ginger and does not yield as much juice when grated — it is best sliced thin and simmered or pounded to release its aromatics. Its flavour is more complex than ginger: less sweet, with distinct notes of pine resin, camphor, and citrus.
In traditional jamu, galangal's applications include:
- Treating digestive complaints — bloating, flatulence, and stomach cramps
- Appetite stimulation
- Anti-fungal and antimicrobial applications (applied topically as a paste or consumed)
- Treating masuk angin — the common Javanese complaint of "wind entering the body," which encompasses symptoms like chills, body aches, nausea, and fatigue
- As a component in herbal preparations for skin conditions
Can You Substitute One for the Other?
In cooking, a small amount of ginger can stand in for galangal in a pinch, but the flavour difference will be noticeable. In jamu preparations, they are generally not interchangeable — each has a distinct therapeutic focus in traditional practice. If a recipe specifies galangal, it is worth making the effort to source it. Fresh galangal is available at most Asian grocery stores and increasingly at specialty food markets.
Storing Both Rhizomes
- Fresh ginger: Keep unpeeled in the refrigerator for up to three weeks, or freeze whole and grate from frozen.
- Fresh galangal: Store similarly to ginger; it tends to dry out faster, so wrapping tightly is important. Galangal also freezes well.
- Dried slices: Both are available dried and are shelf-stable for up to a year when stored in a cool, dark place. Dried galangal is especially common in traditional jamu preparation and has a very long shelf life.
Exploring both of these rhizomes side by side — tasting each raw, making simple teas from each separately — is one of the most educational exercises a new jamu practitioner can undertake. Their differences, once understood in the body and nose, quickly become intuitive.