Thai Basil Pesto

Last summer, my neighbor brought me an armful of Thai basil from her garden, saying she'd planted way too much. I stood there holding this massive fragrant bunch, completely stumped until my eyes landed on my almost-empty jar of regular pesto. What happened next changed my entire sauce rotation forever.

I first served this at a impromptu dinner party when friends dropped by unexpectedly. Tossed it with some rice noodles and grilled shrimp I had in the fridge, and everyone kept asking what restaurant I'd ordered from. There's something about that fragrant basil hitting the sesame oil that makes people lean in and ask for the recipe.

Ingredients

• 2 cups packed Thai basil leaves: The star of the show with those gorgeous purple stems and peppery, anise like notes that make this pesto sing
• 1/2 cup fresh cilantro leaves: Optional but adds this bright, citrusy freshness that balances the heavier basil beautifully
• 1/3 cup unsalted roasted cashews: Creamier than pine nuts and they complement the Thai flavors perfectly, though peanuts work beautifully too
• 2 cloves garlic: Fresh and pungent, dont be tempted to use pre-minced which has that weird aftertaste
• 1 small Thai green chili: Seeds removed unless you want serious heat, this little pepper adds such authentic complexity
• 1 tablespoon freshly squeezed lime juice: Absolutely crucial for that bright acid that cuts through all the rich oils
• 1 tablespoon grated Parmesan cheese: Optional but adds umami depth, or skip for vegan and add a pinch more salt
• 1 teaspoon sugar: Just enough to balance all those bitter, spicy, and sour notes into something harmonious
• 1/2 cup extra-virgin olive oil: The foundation that carries all those flavors, use the good stuff here
• 1 tablespoon toasted sesame oil: Totally transforms the pesto with this incredible nutty, warm depth
• 1/2 teaspoon sea salt: Start here and adjust, the cashews and cheese already bring some saltiness
• Freshly ground black pepper: A few generous grinds add that subtle warmth that ties everything together

Instructions

Prep your greens:

Give the Thai basil a good shake to remove any water from washing, then pull the leaves from those tough purple stems. The stems can make the pesto bitter and fibrous, so take that extra minute to strip them properly.

Build the base:

Toss the basil, cilantro, cashews, garlic, chili, lime juice, Parmesan if using, and sugar into your food processor. Pulse it several times until everything is coarsely chopped and starting to cling together in random clumps.

Stream in the oils:

With the motor running on low, slowly pour in that olive oil and sesame oil through the feed tube. Watch it transform from chunky bits into this gorgeous, emerald green paste that still has some texture to it.

Season and taste:

Scrape down the sides, season with salt and pepper, then give it another quick pulse. Taste and adjust the lime juice, salt, or sugar until it hits that perfect balance of spicy, salty, sour, and sweet.

Store smart:

Transfer to a clean jar and press a piece of plastic wrap directly onto the surface to prevent oxidation. It keeps beautifully for five days in the fridge or freezes for months in ice cube trays.

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My toddler who usually refuses anything green actually asked for seconds when I tossed this with noodles. Now it is our secret weapon for getting him to eat vegetables, and I have caught him eating it straight off the spoon more than once.

Ways To Use This Pesto

Beyond tossing it with noodles, this stuff makes incredible sandwich spread, especially with grilled vegetables and fresh mozzarella. I also love swirling it into soups right before serving, where the heat releases all those fragrant oils into the broth.

Making It Your Own

Roast your cashews in a dry pan until golden before blending and you will notice a huge difference in depth. Sometimes I add fresh lemongrass or galangal when I want even more Thai flavors, but keep them in moderation or they will overpower the delicate basil.

Perfect Pairings

This pesto is insanely good with grilled white fish, where the delicate flesh lets those basil notes really shine through. It also creates this incredible fusion moment spread on pizza instead of regular sauce, especially with shrimp or crispy tofu.

• Thai basil pesto fried rice is next level, just stir a spoonful into hot rice with a beaten egg
• Thin it with extra oil and use as a marinade for chicken or tofu before grilling
• Mix a tablespoon into mayonnaise for the most incredible sandwich spread you have ever tasted

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This recipe has become my go-to gift for food-loving friends, packaged in cute little jars with labels tied with twine. Nothing says you care like something handmade and fragrant.

Recipe FAQs

→ What makes Thai basil pesto different from traditional basil pesto?

Thai basil has a distinct peppery, anise-like flavor with purple stems that sets it apart from sweet Italian basil. This creates a more complex, aromatic sauce with subtle spice notes that bridge Thai and Italian cuisines beautifully.

→ Can I make this pesto without nuts?

Yes, toasted sunflower seeds make an excellent nut-free alternative that still provides creamy texture and subtle flavor. Hemp seeds or pumpkin seeds also work well for those with nut allergies.

→ How long does Thai basil pesto last in the refrigerator?

Properly stored in an airtight container, this pesto stays fresh for up to 5 days. For longer storage, freeze in ice cube trays and transfer to freezer bags for up to 3 months.

→ What dishes pair best with Thai basil pesto?

This versatile sauce shines on rice noodles, soba noodles, or pasta. It's excellent drizzled over grilled fish, chicken, or tofu. Use as a spread on sandwiches, dip for vegetables, or topping for bruschetta.

→ Can I adjust the spiciness of the pesto?

Absolutely. Start with half a Thai chili for mild heat, or add the whole chili with seeds for maximum spice. You can also substitute jalapeño for a different heat profile, or omit chili entirely for a mild, family-friendly version.

→ Is Thai basil pesto suitable for vegetarians and vegans?

The pesto is naturally vegetarian and gluten-free. For a vegan version, simply omit the Parmesan cheese or replace it with nutritional yeast for similar umami flavor without dairy.