What Are Asian Garlic Noodles?

Asian garlic noodles are a San Francisco Vietnamese-American dish known for buttery noodles, plenty of garlic, and savory seasonings. Calling them Vietnamese-American is more precise than calling them traditionally Vietnamese: garlic and fermented seasonings connect the dish to Vietnamese cooking, while its buttered pasta format developed in San Francisco. The dish is associated with Thanh Long, which opened in 1971. After arriving in the city in 1975, Chef Helene An later developed the restaurant’s signature garlic noodles by combining her Vietnamese background with French and European influences and the pasta preferences of American diners.

The Vietnamese phrase mì xào tỏi means “garlic stir-fried noodles”: mì means noodles, xào means “stir-fried,” and tỏi means “garlic.” English speakers can pronounce mì xào tỏi approximately as “mee sow toy.” The phrase is a descriptive Vietnamese name rather than evidence that this specific restaurant dish originated in Vietnam.

The original Thanh Long formula has not been publicly disclosed. Its menu describes the noodles as made with “An’s Secret Sauce,” so the oyster sauce, soy sauce, sesame oil, and Parmesan used in this recipe should be understood as ingredients in a home interpretation. Parmesan adds salty, nutty depth to this version but should not be presented as a confirmed ingredient in the original recipe.

Garlic noodles are closely linked to San Francisco seafood dining. Thanh Long serves them alongside dishes such as roasted Dungeness crab and royal tiger prawns, while related versions also appear at Vietnamese-American, Viet-Cajun, and Asian-fusion restaurants.

Why You'll Love Asian Garlic Noodles

You'll love these garlic noodles because they pack restaurant-level savory flavor into a quick bowl made with everyday pantry staples.

• Umami blast. Oyster sauce, soy sauce, gently browned garlic, butter, and Parmesan come together for an intense savory-sweet depth, far richer than the short ingredient list suggests.
• Flexible noodles and pairings. The sauce works with 4 types of noodles like spaghetti, ramen, chow mein, or egg noodles, and pairs with grilled shrimp, baked salmon, roasted crab, crispy tofu, or 1 fried egg and steamed greens.
• 20 minutes and 4 straightforward steps. Most of that time is spent boiling the noodles, since the sauce takes under 5 minutes, and everything finishes in 1 skillet for easy cleanup.

Asian Garlic Noodles Ingredients

You can make this garlic noodle recipe with 10 main ingredients, plus optional turmeric for color. The recipe combines thin noodles with garlic butter, savory seasonings, scallions, and Parmesan.

Noodles

• 12 oz (340 g) thin spaghetti or another long wheat noodle. Thin spaghetti is widely available and holds the butter sauce well. Fresh Chinese egg noodles, such as lo mein noodles, create a chewier variation. The noodle used in Thanh Long’s original recipe has not been publicly confirmed.
• Salt, to taste. A pinch of salt seasons the cooking water for your noodles, so the pasta actually has flavor before it ever meets the sauce.

Garlic Butter Sauce and Toppings

• 4 tablespoons (57 g) unsalted butter. Unsalted butter is the base that carries the garlic flavor and gives every strand a rich, glossy coating. Go for real butter here, not olive oil or coconut oil, because nothing else brings that same deep richness to this dish.
• 8 cloves garlic, peeled and thinly sliced. Thin slices produce visible golden pieces throughout the noodles. Finely minced garlic distributes more evenly through the sauce but requires lower heat and closer attention to prevent burning.
• 1 tablespoon oyster sauce. Oyster sauce adds a deep, savory sweetness and a rich, dark color to the sauce.
• 1 tablespoon soy sauce. Soy sauce is the salty backbone. Stick with regular all-purpose soy sauce, not dark soy sauce.
• 1 to 2 teaspoons brown sugar. Brown sugar balances out the salt and rounds off the sauce. Reach for light brown sugar instead of white, because that little hint of molasses really helps.
• 1 teaspoon sesame oil. Sesame oil is a nice finishing touch that deepens the nutty and toasted flavor.
• 1/8 teaspoon turmeric (optional). Turmeric adds a warm golden color to the noodles. It is just for looks, so you can totally leave it out without losing any flavor.
• 1 to 2 scallions, chopped. Chopped scallions add a fresh little bite and a nice pop of color.
• 1/4 cup (25 g) Parmesan cheese, grated. Parmesan adds salty, nutty depth and helps enrich the sauce. It is part of this home version and is not a publicly confirmed ingredient in Thanh Long’s secret recipe. Finely grated cheese melts more evenly than coarse or pre-shredded Parmesan.

How to Make Asian Garlic Noodles Step by Step

The whole dish comes together in about 20 minutes, roughly 5 minutes of prep and 15 minutes of cooking. It comes down to 4 steps: cook the noodles, caramelize the garlic, build the sauce, and toss everything with Parmesan. 

Step 1: Cook the Noodles

Bring 1 large pot of salted water to a rolling boil and cook the spaghetti until al dente, following the package timing. Before you drain it, scoop out and save 1/2 cup of the cooking water, then drain the noodles and set them aside. That starchy water is the secret to a smooth sauce later, since it helps the sauce cling to every strand instead of pooling at the bottom.

Step 2: Caramelize the Garlic in Butter

Melt 4 tablespoons of butter in a large skillet over medium heat, then add the sliced garlic. Cook for about 3 minutes, stirring occasionally, until the garlic turns pale gold and smells fragrant.

Vietnamese cooks call this technique phi tỏi, which means heating garlic in fat to release its aroma without letting it turn dark brown and bitter. Watch it closely once the edges begin to color, as garlic can burn quickly. Sliced cloves are easier to control than minced garlic because they brown more slowly and evenly.

Step 3: Build the Sauce

Add the oyster sauce, soy sauce, brown sugar, sesame oil, and turmeric if using. Stir over low heat for about 1 minute, until the sugar dissolves and the sauce bubbles gently. Add the scallions and cook for another 30 seconds, just until softened.

The sauce will still look thin at this stage. Do not add the Parmesan yet; it will be incorporated with the noodles and reserved cooking water in the next step.

Step 4: Toss the Noodles and Parmesan

Reduce the heat to low or remove the skillet from the burner. Add the drained noodles, ¼ cup (25 g) grated Parmesan, and 1 tablespoon of reserved noodle water. Toss until the butter, cheese, and cooking water form a glossy coating over the noodles.

Add more cooking water 1 tablespoon at a time only if needed. Finish with the sesame oil and scallions, toss briefly, and serve immediately. Avoid prolonged tossing over high heat, which can make the cheese clump.

How to Serve Asian Garlic Noodles

Asian garlic noodles serve as a side dish with seafood or a quick main on their own. For a group, serve them family-style and let everyone build their own plate. The usual spread is:

• The garlic noodles, hot from the skillet.
• Seafood, like grilled shrimp, butter-baked crab, or seared salmon.
• 1 fried egg or crispy tofu, to turn the noodles into a full meal.
• Steamed greens, such as broccolini or bok choy.
• Chili sauce or hot sauce on the side, for extra heat.

The dish was first created by a Vietnamese chef in San Francisco to go with 1 roasted Dungeness crab, and it still pairs best with seafood. For extra heat, we like a drizzle of CHIN-SU Hot sauce, since its roasted chili and garlic notes pair well with the buttery, umami-rich noodles.

Tips for the Best Asian Garlic Noodles

These 4 small choices make a huge difference between good garlic noodles and great ones.

• Slice the garlic; do not mince it. Sliced garlic caramelizes into golden, crispy bits that cling to the noodles, while minced garlic just burns and disappears into the sauce.
• Save the noodle cooking water. The starch in that water thickens the sauce and helps it coat every strand rather than pooling at the bottom of the pan.
• Grate fresh Parmesan. Pre-grated or sandy Parmesan won't melt smoothly, but 1 microplane gives you shavings that dissolve right into the sauce.
• Add fish sauce for deeper umami (optional). The main recipe uses oyster and soy sauce, but 1 to 2 teaspoons of fish sauce (like CHIN-SU) pushes the umami further, a common twist in Vietnamese-American garlic noodles. It won't taste fishy; it just rounds out the salt.

What Can You Substitute or Change in Asian Garlic Noodles?

These 5 swaps let you make garlic noodles with whatever noodles and sauces you have on hand.

Ingredient swaps

• Ramen noodle cakes or chow mein can replace spaghetti. Ramen's wrinkly texture holds more sauce and garlic bits, while chow mein offers a chewier bite; both are found at 2 popular Asian grocery stores, like H Mart or 99 Ranch.
• Fresh Chinese egg noodles (lo mein) also work as a substitute for spaghetti. Look for them in the refrigerated section of an Asian grocery store and cook them according to the package directions rather than using a fixed 30-second blanching time.
• Vegetarian mushroom stir-fry sauce can replace oyster sauce. This works well when avoiding oyster sauce or shellfish, but check the label for sodium, allergens, and other animal-derived ingredients.
• Maggi Seasoning can replace the soy sauce. Maggi brings 1 deeper, more complex savory note, a little like soy sauce mixed with Worcestershire, and it sits in the Asian aisle.
• Parmesan can be omitted. The noodles will still work, but the sauce will taste less salty and nutty and may not cling as well. Add a little less noodle water at first, then adjust the consistency as needed.
• Plant-based butter can replace dairy butter. Flavor, salt content, and water content vary by product, so the finished sauce may taste or emulsify differently.

Cooking method

• A wok can replace the skillet. 1 wok spreads heat more evenly and keeps the noodles from crowding, so reach for the largest, heaviest pan you have.

You can swap whenever you need to, still the closer you stay to the original ingredient list, the better the balance of garlic, butter, and umami holds together.

Have you tried garlic noodles with crab yet, or is this your first batch? Drop your questions, noodle swaps, or results in the comments below, and if this recipe worked for you, a quick star rating helps other home cooks find it. Share your finished garlic noodles on social media with #CHINSU, since we love seeing every bowl. And if you're curious whether CHIN-SU chili sauce goes with your garlic noodles, grab 1 bottle at chinsu.com and give it a try.