Lemongrass is a tall, fibrous grass widely used in Southeast Asian and South Asian cooking, particularly in Thai, Vietnamese, Indonesian, and Malaysian cuisine. Its flavor is floral, citrusy, and faintly gingery, with a clean, fresh aroma that's unlike any other ingredient. It appears in curries, soups (most famously tom kha gai and tom yum), marinades, stir-fries, and teas. The lower pale portion of the stalk is the most flavorful part; the outer leaves and upper green section are too tough to eat but can be used to infuse broths.
Working with fresh lemongrass requires some preparation — peeling away the tough outer layers, bruising the stalk to release its oils, and either slicing very finely or removing the stalk before serving (as it's fibrous and unpleasant to bite into directly). Lemongrass paste or dried versions simplify this process but at some cost to flavor complexity.
Finding fresh lemongrass can be a challenge outside of cities with well-stocked Asian grocery stores. Even when available, it's easy to run out mid-recipe. Understanding what makes lemongrass unique — that combination of citrus, floral warmth, and mild ginger-like heat — helps in selecting the most effective substitute.
■Best Substitutes for Lemongrass
These substitutes target different aspects of lemongrass's flavor profile. No single substitute fully replicates it, but the combinations below come close in most cooked applications.
| Substitute | Flavor / Texture Match | Swap Ratio |
|---|---|---|
| Lemongrass paste (jarred) | Closest match — very convenient for cooked dishes | 1 tbsp paste per fresh stalk |
| Lemon zest + fresh ginger | Captures citrus + gentle heat of lemongrass | 1 tsp zest + 1/4 tsp grated ginger per stalk |
| Dried lemongrass | Weaker, less aromatic — needs longer to infuse | 3x the amount (3 tbsp dried per fresh stalk) |
| Makrut (kaffir) lime leaves | Different but citrusy and floral — common in Thai cooking | 2 leaves per stalk |
| Lemon thyme | Lemony, herby — mild but compatible | Use 2–3 sprigs per stalk |
| Lemon verbena leaves | Intensely lemony, floral — works in soups and teas | 2–3 leaves per stalk |
| Lemon balm | Mild lemony mint quality — for teas and light dishes | 3–4 leaves per stalk |
■How to Choose the Right Substitute
For cooked dishes — curries, soups, stir-fry sauces, and marinades — lemongrass paste is by far the most practical substitute. Most commercial lemongrass pastes are made from ground fresh lemongrass with minimal preservatives, and they capture the essential aromatic character quite well. Use 1 tablespoon of paste per fresh stalk called for. This is the substitute to reach for when you're mid-recipe and need something that works without additional preparation.
When you don't have lemongrass paste either, the lemon zest and fresh ginger combination is the most accurate homemade approximation. Lemon zest provides the citrus oils and floral quality, while fresh ginger supplies the gentle warmth and slight bite that lemongrass has in abundance. This combination works best in curries, marinades, and soups — anywhere that the substitute has time to cook into the dish. Lime zest can be used instead of lemon zest for a slightly more authentic Southeast Asian citrus note.
Makrut lime leaves (often still labeled as kaffir lime leaves) don't replicate lemongrass's flavor exactly, but they provide a compatible citrusy, floral quality that belongs in the same culinary tradition. They work best in Thai and Indonesian dishes where both ingredients might normally appear together. Dried lemongrass is a last resort — it lacks the aromatic oils of fresh and requires significantly more volume and longer cooking time to release any meaningful flavor.
■Frequently Asked Questions
Can I substitute lemon juice for lemongrass? Lemon juice provides acidity but lacks the floral, grassy, and gingery qualities that make lemongrass distinctive. It's too one-dimensional to work as a standalone substitute. If you use lemon juice, combine it with lemon zest (for the aromatic oils) and a small amount of fresh ginger to build some of lemongrass's complexity. Use about 1 teaspoon lemon juice, 1/2 teaspoon zest, and a sliver of fresh ginger per stalk.
How do I prepare fresh lemongrass? Remove the tough outer leaves (2–3 layers) and the green upper portion of the stalk, leaving the pale lower section — about 6 inches. For marinades and soups where the stalk will be removed before serving, bruise it by pressing with the flat of a knife. For direct eating (in salads or finely textured dishes), slice very thinly crosswise or mince finely.
Is dried lemongrass worth using? Dried lemongrass has significantly less aromatic impact than fresh. Use three times the amount of dried as you would fresh stalks, and add it early in cooking to give it time to rehydrate and release flavor. It's best used in braised dishes, soups, and curries that simmer for 20+ minutes. For fresh applications like salad dressings or raw marinades, dried lemongrass is not effective.
What's the best lemongrass substitute for tom kha gai? Tom kha gai (Thai coconut chicken soup) traditionally uses lemongrass alongside galangal and makrut lime leaves. If you're out of lemongrass, the lemon zest and ginger combination works well because the coconut milk, fish sauce, and lime juice provide plenty of surrounding complexity. Adding makrut lime leaves (if you have them) alongside lemon zest will produce a convincing result.
Can I freeze fresh lemongrass? Yes — freezing is the best way to extend fresh lemongrass's shelf life. Wrap individual cleaned stalks in plastic wrap and freeze in a zip-lock bag for up to 6 months. Use directly from frozen: grate frozen lemongrass on a fine grater or mince after thawing. Freezing doesn't significantly compromise the flavor, making this a smart strategy when you find fresh lemongrass available.
See also: Food Substitutes Guide | Fresh Ginger Substitutes | Garlic Substitutes | Fresh Mint Substitutes