Best Substitutes for Thai Basil
Thai basil has a distinct licorice-like flavor from methyl chavicol, plus a peppery bite that regular basil lacks. It stays firmer when cooked and doesn't wilt as quickly under high heat. The leaves are darker green with purple stems and serrated edges. In Thai cooking, it's added at the very end of stir-fries or used raw as garnish because the flavor compounds break down rapidly above 200F. The aroma is more intense than Italian basil, with notes of anise and clove. When you substitute, you lose that signature licorice note, but the right combination can get you close.
Best Overall Substitute
Regular Italian basil plus 1/4 teaspoon fennel seeds per 1/4 cup basil leaves. Crush the fennel seeds lightly and mix them in during the last 30 seconds of cooking. This adds the missing anise flavor that makes Thai basil unique while keeping the fresh herbal base.
All Substitutes
Regular basil (Italian/sweet)
1:1 by volumeItalian basil provides the herbal freshness but lacks the licorice bite. It wilts faster under heat, so add it in the final 15 seconds of cooking instead of the last minute like Thai basil. The flavor is milder and more floral. Works best in dishes where Thai basil is used fresh or barely cooked. Add a pinch of ground star anise (1/8 teaspoon per 1/4 cup basil) to mimic the anise notes.
Cilantro
3/4 the amount by volumeCilantro handles high heat better than regular basil and has a bright, citrusy bite. Use less because the flavor is stronger. It doesn't provide the anise notes but adds its own complexity that works in Thai dishes. Particularly good in curries and stir-fries where the fresh, peppery quality matters more than the specific licorice flavor. Add during the last 30 seconds of cooking.
Fresh mint
1/2 the amount by volumeMint provides cooling freshness and holds up to heat reasonably well. Use half the amount because mint's flavor is more concentrated. It gives a different but pleasant contrast to spicy Thai dishes. The menthol cooling effect works especially well in curries and noodle dishes. Spearmint is better than peppermint for cooking. Add in the final 20 seconds to preserve the oils.
Cilantro and mint combination
1/2 cilantro + 1/4 mint by volumeCombining cilantro's citrusy bite with mint's cooling effect creates complexity closer to Thai basil. The cilantro provides the peppery element while mint adds freshness. This works particularly well in dishes with chili heat where you need both cooling and brightness. Use 3/4 the total amount you'd use of Thai basil. Add both herbs in the last 30 seconds.
Italian basil with star anise
1:1 basil plus 1/8 teaspoon ground star anise per 1/4 cup basilStar anise provides the missing licorice flavor that defines Thai basil. Grind whole star anise pods fresh for better flavor than pre-ground. Add the star anise to oil early in cooking, then add regular basil at the end. This creates a closer flavor match than basil alone. The anise can be overwhelming, so start with less and adjust. Remove whole pods before serving if using them instead of ground.
Fresh oregano
1/2 the amount by volumeOregano has a peppery bite similar to Thai basil and holds up well to high heat. Use half the amount because oregano is more potent. It lacks the anise notes but provides the herbal intensity. Mediterranean oregano works better than Mexican varieties for Thai dishes. The flavor profile is different but creates a pleasant result in stir-fries. Add during the last 45 seconds of cooking.
Tarragon
1/3 the amount by volumeTarragon has natural anise notes that approximate Thai basil's licorice flavor. Use much less because tarragon is intensely flavored. French tarragon works better than Russian varieties. The flavor profile is different but the anise element makes it surprisingly compatible with Thai dishes. Best in applications where Thai basil is used sparingly as accent rather than in large quantities.
Purple shiso (Japanese basil)
3/4 the amount by volumeShiso has a complex flavor with hints of anise, mint, and basil. Purple varieties have stronger flavor than green. It handles heat well and provides some of the licorice notes found in Thai basil. The texture is similar and it doesn't wilt as quickly as Italian basil. Found in Asian grocery stores. The flavor is unique but works well in Thai-inspired dishes.
Lemon basil
1:1 by volumeLemon basil provides citrusy brightness instead of anise notes but handles heat similarly to Thai basil. The flavor is completely different but works well in Thai dishes by adding another layer of brightness. It's actually used in some Thai cooking, particularly in northeastern regions. More delicate than Thai basil, so add in the final 20 seconds. Creates a different but pleasant result.
How to Adjust Your Recipe
Thai basil goes in during the final 30-60 seconds of cooking to preserve its oils and prevent the licorice flavor from turning bitter. Most substitutes need even less time. Regular basil needs only 15 seconds. Cilantro and mint can handle 30 seconds. When using spice additions like star anise, add those early with garlic and chili, then finish with the herb substitute.
For stir-fries, remove the pan from heat before adding herb substitutes, then toss quickly. The residual heat will warm them without overcooking. In curries, stir substitutes into the finished curry off the heat. For fresh applications like salads or garnish, all substitutes work directly with no timing changes needed.
When Not to Substitute
Traditional pad kee mao (drunken noodles) relies on Thai basil's specific anise flavor as a defining characteristic. The dish tastes incomplete without it. Thai basil beef (pad kra pao) also depends on that licorice bite to balance the fish sauce and chili heat. In these recipes, it's better to skip the herb entirely than use a substitute that changes the fundamental flavor profile.
Thai basil pesto cannot be substituted successfully. The anise notes are essential to the sauce's identity, and regular basil pesto is a completely different condiment. Fresh spring rolls where Thai basil is a prominent flavor component also suffer significantly from substitution.
Frequently Asked Questions
Can I use dried basil instead of fresh Thai basil?
No, dried basil doesn't work. Dried herbs lose the volatile oils that give Thai basil its distinctive anise flavor and fresh bite. Use 1/4 teaspoon dried basil plus 1/8 teaspoon ground fennel seed per 2 tablespoons fresh Thai basil if you must, but the result will be completely different. Fresh substitutes work much better.
How much regular basil equals 1 cup of Thai basil leaves?
Use 1 cup regular basil plus 1/2 teaspoon lightly crushed fennel seeds. Add the fennel to hot oil for 10 seconds before adding other ingredients, then finish with the regular basil in the final 15 seconds. This approximates the anise flavor while providing the herbal base.
What if I can't find any fresh herbs for substitution?
Mix 1/2 teaspoon dried oregano with 1/4 teaspoon ground fennel seed per 1/4 cup fresh Thai basil called for. Add both to oil early in cooking. This provides some herbal background and anise notes, though the fresh element is lost. Better than omitting entirely in cooked dishes.
Can I grow Thai basil from regular basil seeds?
No, Thai basil (Ocimum basilicum var. thyrsiflora) is a different variety from sweet basil. Seeds labeled 'Thai basil' or 'holy basil' will grow the correct plant. Thai basil takes 65-75 days from seed to harvest and needs temperatures above 60F consistently. Order seeds online if local stores don't carry them.