Nuoc Cham (Vietnamese Dipping Sauce)

If you've ever dunked a crispy egg roll at a Vietnamese restaurant, or poured that thin, golden sauce over a bowl of noodles and grilled pork, you've had nuoc cham (nước chấm). It's one of the most useful sauces you can keep in your fridge, and something you'll find on every Vietnamese table.

My favorite Vietnamese restaurant is right down the street from me, and I love everything on their menu, especially with extra egg rolls and their amazing dipping sauce. I had to make it at home to keep me from running out for it all the time.

I updated this recipe to be closer to how nuoc cham is traditionally made, with a focus on ratios so you can scale the serving size and heat factor up or down as you wish.

What is Nuoc Cham?

Nuoc cham (nước chấm) literally means "dipping sauce" in Vietnamese, and it can refer to several kinds of dipping sauces. Outside Vietnam, the name usually means the sweet, tangy fish sauce version made with fish sauce, lime, sugar and water, often with garlic and chilies. This version is also called nuoc mam cham or nuoc mam pha.

For this fish sauce version, the basic balance is salty fish sauce, sour lime and sweet sugar, thinned with water so it works as a dip, a drizzle or a dressing. Garlic and chilies are commonly added to taste. Recipes vary a lot by family, region and dish, so treat any recipe, including mine, as a starting point.

Nuoc Cham Ingredients

The full list of ingredients with measurements are listed in the recipe card at the bottom of the post.

• Fish sauce. The core ingredient. Use a good one, because you'll taste it. Red Boat is a strong flavored choice, so start with a little less if that's your brand. Three Crabs and Squid are milder and very popular for nuoc cham.
• Fresh lime juice. Freshly squeezes is best. Bottled lime juice tastes flat. You'll need about 2 limes.
• Sugar. Plain white sugar is ideal. Palm sugar works too, with a slightly deeper flavor.
• Warm water. Dissolves the sugar and thins the sauce as needed.
• Garlic. Minced very fine.
• Thai chilies. Thai peppers are the most popular, though bird's eye chilies are excellent here. They bring clean, sharp heat. Red looks great floating in the sauce, but green works just as well. Use a mix!

How to Make Nuoc Cham - the Recipe Method

1. Dissolve the sugar. Stir the sugar into the warm water until it disappears completely, about 30 seconds.
2. Add the lime. Stir in the lime juice. Give it a taste. It should have a strong sweet-lime flavor (think strong limeade or lime simple syrup).
3. Add the fish sauce. Stir it in, then taste again. It should be balanced, with no single flavor jumping out. Adjust with a little more lime, sugar or fish sauce as you like.
4. Add the garlic and chilies. Stir them in and watch them float. Let the sauce rest for about 10 minutes before serving so the garlic and chilies can infuse. BOOM! Nuoc cham.

The Nuoc Cham Ratio

The easiest way to remember nuoc cham is equal parts lime juice, sugar and fish sauce, plus about 2½ times as much water. From there, add garlic and chilies to taste.

Treat the ratio as a starting point, not a rule. Fish sauce brands vary a lot in saltiness, and limes vary in tartness. Taste as you go.

What does Nuoc Cham Taste Like?

Nuoc cham is bright, salty, sweet, tangy and spicy, all in one taste. The fish sauce adds deep savory umami without tasting fishy once it's balanced with the lime and sugar.

The garlic adds bite and the chilies add a fresh, sharp heat that I love. It's light enough to pour over a whole bowl of noodles without weighing it down, and the perfect dipping sauce.

How Spicy Is Nuoc Cham? (Mild to Wild)

Nuoc cham can range from mild to quite spicy. A couple of Thai chilies gives this version a noticeable but balanced kick. Thai chilies run about 50,000 to 100,000 Scoville Heat Units, but two spread through a cup of sauce keeps it friendly. Here's how to adjust it to your preference:

• Mild. Skip the Thai chilies and use half a cored fresno or serrano, or leave the chilies out entirely.
• Medium (the recipe). 2 Thai chilies, thinly sliced.
• Hot. 4 to 5 Thai chilies, minced instead of sliced so more heat gets into the sauce. Or crush them with the garlic and sugar in a mortar and pestle first, the way some cooks do.
• Wild. Add a spoonful of spicy homemade chili garlic sauce, or swap in a minced habanero for a fruity, fiery version. Not traditional, but very tasty, my friends.

Nuoc Cham Variations

• Vinegar variation. Some cooks and restaurants replace part or all of the lime juice with rice vinegar or white vinegar for more consistent acidity.
• Coconut water. Some Southern Vietnamese versions use coconut water in place of plain water for a sweeter, rounder sauce.
• Nuoc mam gung (ginger). Add a tablespoon of finely minced fresh ginger. It's a classic pairing for poached chicken, duck and seafood.
• For bun bowls. Add a handful of pickled carrot and daikon (do chua) right into the sauce.
• Vegetarian (nuoc cham chay). Use vegan fish sauce, or light soy sauce with a little extra sugar and lime.

What to Serve with Nuoc Cham

• Crispy egg rolls (cha gio) and spring rolls
• Bun bowls, like bun thit nuong (grilled pork and vermicelli)
• Bun cha, com tam (broken rice) and banh xeo (sizzling crepes)
• Grilled meats and shrimp, like my Bo Luc Lac (Shaking Beef)
• As a dressing for noodle salads, slaws and cucumber salads

For fresh summer rolls (goi cuon), many people prefer a peanut sauce. Try my Thai Peanut Sauce for that.

How do you pronounce Nuoc Cham?

For English speakers, "nook chum" is a reasonable approximation, and it's close enough to order it anywhere. Vietnamese pronunciation varies by region. Roughly, nước is a quick one-syllable sound closer to "nuh-uk," and chấm is closer to "chuhm" than the English word "cham."

Storage

Keep nuoc cham covered in the refrigerator for up to 1 week. The lime fades and the garlic gets stronger over time. The base without lime or garlic keeps for several weeks.

I hope you enjoy my nuoc cham recipe! Let me know if you make it. I'd love to hear what you dunk in it.

More Vietnamese Recipes

• Bun Bo Hue (Spicy Vietnamese Noodle Soup)
• Bo Luc Lac (Vietnamese Shaking Beef)
• Bo Kho (Spicy Vietnamese Beef Stew)

More Asian Dipping Sauces

• Gyoza Sauce
• Prik Nam Pla (Thai Chili Fish Sauce)
• Thai Sweet Chili Sauce
• Thai Peanut Sauce

Got any questions? Ask away! I’m happy to help. If you enjoy this recipe, I hope you’ll leave a comment with some STARS. Also, please share it on social media. Don’t forget to tag us at #ChiliPepperMadness. I’ll be sure to share! Thanks! — Mike H.

FAQs

What is the difference between nuoc mam and nuoc cham?

Nuoc mam is straight fish sauce. Nuoc cham literally means "dipping sauce." The version most people mean is nuoc mam cham, fish sauce mixed with lime, sugar and water, often with garlic and chilies.

Is nuoc cham the same as spring roll dipping sauce?

Yes. Nuoc cham is the classic dipping sauce for crispy Vietnamese egg rolls (cha gio). Fresh summer rolls are often served with a peanut-hoisin sauce instead, though many people use nuoc cham for both.

How long does nuoc cham last?

Up to 1 week, covered in the refrigerator. The lime fades and the garlic intensifies over time. A base of just water, sugar and fish sauce keeps for several weeks.

Can I make nuoc cham without fish sauce?

Yes. Use vegan fish sauce, or light soy sauce with a little extra lime and sugar. The flavor is different but still delicious.

How do you pronounce nuoc cham?

For English speakers, "nook chum" is a reasonable approximation. Pronunciation varies by region in Vietnam, but chấm is closer to "chuhm" than the English word "cham."