1-First step: prep the basil and nuts Start by washing and drying the Thai basil leaves well. This matters because extra water can make the pesto thin and dull. Measure out 2 cups packed Thai basil leaves, 2 tablespoons roasted cashews, 2 tablespoons roasted peanuts, and 2 garlic cloves. If you are using a blender instead of a processor, keep the basil as dry as possible so the blades can catch it better.

2-Second step: pulse the base ingredients Add the cashews, peanuts, crushed garlic, and chili flakes to the food processor. Pulse a few times until the nuts break down into small bits. This gives the final Thai Basil Pesto a smoother texture and keeps the garlic from overpowering the sauce in one big bite. If you like a more rustic pesto, stop while the mixture still has visible texture.

3-Third step: add the herbs and seasonings Add the Thai basil leaves, olive oil or sesame oil, sea salt, rice wine vinegar, caster sugar, and lime juice. If you are using soy sauce or tamari instead of sea salt, add 1 teaspoon now. Pulse again in short bursts. Scrape down the sides as needed so the herbs blend evenly. The mixture should start turning into a thick green paste with a fragrant, nutty smell.

4-Fourth step: check texture and flavor Taste the pesto before you call it done. Thai basil pesto should taste bright, salty, a little sweet, a little tangy, and lightly spicy. If it tastes flat, add a pinch more salt or soy sauce. If it feels too sharp, add a touch more sugar. If you want more lift, squeeze in a little extra lime juice. For a thinner sauce, add a teaspoon or two more oil.

5-Final step: serve it your way Spoon the pesto over warm noodles, rice bowls, grilled chicken, tofu, roasted vegetables, or even toast. It also works as a dip for cucumber spears, carrot sticks, or crackers. If you want to keep the flavor strong, serve it right away. For a softer, creamier version, let it sit for 10 minutes before using so the flavors can settle together.