Cold Sesame Noodles with Crispy Chili Oil

When the temperature climbs and the last thing you want to do is stand over a hot stove, cold sesame noodles are the answer. the sauce is a 5-minute blend of tahini, soy sauce, rice vinegar, and crispy chili oil that coats every strand with nutty, tangy, spicy richness. this is the kind of dish that tastes better than it has any right to, given how little effort it takes.

Why You’ll Love This Cold Sesame Noodles

• No-cook sauce — everything comes together in one bowl, no heating required.
• Crispy chili oil on top — adds crunch, heat, and a gorgeous red sheen.
• Ready in 15 minutes — boil noodles, toss with sauce, top, eat.
• Great at room temperature — perfect for picnics, potlucks, and meal prep.
• Customizable — add shredded chicken, cucumber, or whatever you have.

Ingredients

• 1 lb spaghetti or Chinese wheat noodles (thin or medium thickness)
• ⅓ cup tahini (well-stirred; the oil and paste should be fully combined)
• 3 tbsp soy sauce (low-sodium preferred)
• 2 tbsp rice vinegar (unseasoned)
• 1 tbsp toasted sesame oil
• 1 tbsp honey or maple syrup
• 2 garlic cloves (grated on a microplane)
• 1 tsp fresh ginger (grated)
• 2–3 tbsp crispy chili oil (like Lao Gan Ma) (adjust to your heat tolerance)
• 4 scallions (thinly sliced)
• 1 tbsp toasted sesame seeds
• 1 small cucumber (julienned, optional)

Equipment

• High-quality tahini
• Large pot (for boiling noodles)
• Colander
• Large mixing bowl
• Small saucepan (for chili oil, if making from scratch)
• Microplane or fine grater
• Large pot — give the noodles room to move

How to Make Cold Sesame Noodles

Step 1 — Cook and chill the noodles (10 minutes)

Bring a large pot of water to a rolling boil. Add the noodles and cook according to package directions until just al dente — usually 1 minute less than the recommended time since they’ll soften slightly in the sauce. Drain and rinse under cold running water until completely cool. This stops the cooking and removes excess starch so the sauce coats evenly. Toss with 1 teaspoon of sesame oil to prevent sticking. Set aside.

Step 2 — Make the sesame sauce (3 minutes)

In a large bowl, whisk together the tahini, soy sauce, rice vinegar, toasted sesame oil, honey, garlic, and ginger. The sauce will look broken and curdled at first — keep whisking. It comes together into a smooth, pourable paste. If it’s too thick to toss easily, add 1 to 2 tablespoons of cold water. Taste: it should be salty, nutty, tangy, and just barely sweet.

Step 3 — Toss noodles with sauce (2 minutes)

Add the cold, drained noodles to the bowl of sauce. Use tongs or your hands to toss until every strand is evenly coated. The sauce will look thin at first but thickens as it sits and the noodles absorb it. Add the julienned cucumber now if using.

Step 4 — Serve with toppings (2 minutes)

Pile the noodles into bowls or onto a platter. Drizzle generously with crispy chili oil — don’t be shy, this is where most of the flavor and crunch comes from. Scatter sliced scallions and toasted sesame seeds on top. Serve at room temperature or cold from the fridge.

Pro Tips

Rinse the noodles thoroughly. Skipping this step leaves starch on the surface, which prevents the sauce from coating evenly. Cold water rinse is non-negotiable for cold noodle dishes.

Stir your tahini well before measuring. The oil separates from the solids in the jar. If you scoop from the top, you get mostly oil; from the bottom, a dry paste. Stir until uniform.

Make your own crispy chili oil if you can. Heat ¼ cup of neutral oil until shimmering, pour over 2 tablespoons of gochugaru (Korean chili flakes) in a heatproof bowl, and add 1 tablespoon each of sesame seeds and fried shallots. It’s infinitely better than store-bought.

These taste better after 30 minutes in the fridge. The noodles absorb the sauce and the flavors meld. If you have time, make them an hour ahead.

Double the sauce and save half. This sauce is incredible on grilled chicken, roasted vegetables, or as a dip for spring rolls. It keeps in the fridge for 5 days — just whisk in a splash of water to loosen before using.

Add protein for a full meal. Shredded rotisserie chicken, sliced grilled steak, or crispy tofu all turn these noodles from a side into a complete dinner. Add the protein on top and toss gently so it doesn’t break apart.

Save the noodle cooking water. Even for cold noodles, the starchy cooking water is useful. If the sauce is too thick after tossing, a splash of noodle water loosens it without diluting the flavor the way plain water would.

Grate the ginger and garlic on a microplane. This creates a fine paste that distributes evenly throughout the sauce. Minced chunks of either one will overpower individual bites.

Variations & Substitutions

Peanut sesame noodles

Replace half the tahini with creamy peanut butter. The peanut flavor pairs especially well with shredded rotisserie chicken and a squeeze of lime.

With shredded chicken

Toss in 2 cups of shredded rotisserie chicken. This turns the noodles into a complete protein-packed meal that works for lunch boxes.

Gluten-free

Use rice noodles or sweet potato glass noodles instead of wheat pasta. Check that your soy sauce is gluten-free (tamari works perfectly).

Storage & Reheating

Refrigerator: Store in an airtight container for up to 4 days. The noodles absorb sauce as they sit — loosen with a splash of soy sauce and a drizzle of sesame oil before serving leftovers.

Not recommended for freezing. The noodles become mushy when thawed.

Meal prep tip: Keep the chili oil separate and add it just before eating to preserve the crunch.

What to Serve With Cold Sesame Noodles

These cold sesame noodles are a meal on their own, but they’re also a fantastic side alongside grilled proteins or as part of a summer spread. For a full picnic menu, pair them with a crisp Asian cucumber salad.

Browse our quick summer meals for more warm-weather recipes that don’t require turning on the oven.

Love noodle dishes? Browse our dinner recipe collection for more weeknight inspiration.

Nutrition Information

Per serving (1 of 4): approximately 420 calories, 14g protein, 52g carbohydrates, 18g fat, 3g fiber. Values are estimates.

Frequently Asked Questions

Can I use soba noodles instead of spaghetti?

Yes — soba (buckwheat) noodles are traditional in Japanese cold noodle dishes. Cook them 1 minute less than the package says, and rinse very thoroughly since soba releases more starch.

Is this dish spicy?

It depends on your chili oil. Start with 1 tablespoon and taste before adding more. The chili oil provides more aroma and crunch than pure heat, so even spice-sensitive eaters usually enjoy it.

Can I make the sauce ahead of time?

The sauce keeps in the fridge for up to 5 days in a sealed jar. It will thicken — whisk in a tablespoon of water to loosen before tossing with noodles.

What can I substitute for tahini?

Smooth peanut butter or cashew butter work well. The flavor profile shifts slightly but the creamy texture and nutty base are the same.

How far ahead can I make cold sesame noodles?

Up to 4 hours ahead is ideal. Beyond that, the noodles continue to absorb the sauce and can become mushy. If making ahead, reserve half the sauce and toss with the noodles 30 minutes before serving.

If you make these cold sesame noodles, tell us how much chili oil you went with — we’re in the ‘more is more’ camp. this is the recipe we reach for every summer when it’s too hot to cook. save it for your next heatwave. once you master the basic sauce, try swapping in different nut butters or adding a spoonful of miso paste for even more umami depth.