Nam Jim Jaew recipe: Thai dipping sauce for BBQ

What is nam jim jaew?

Nam jim is a general Thai term for dipping sauce. Nam jim jaew, also spelled nam chim chaeo, is strongly associated with the Isan cuisine of Northeast Thailand. The sauce combines fish sauce, acidity, chili, a small amount of sweetness, and khao khua: roasted glutinous rice powder.

Unlike a creamy peanut sauce, nam jim jaew remains thin and vibrant. The sauce should not have just one flavor. You first taste sour and salt, then chili and roasted rice, with enough sweetness to round off the sharp edges.

You can find more about the dishes served with this sauce on the page about Thai BBQ with moo ping and gai yang.

Ingredients for about 150 ml of nam jim jaew

• 3 tablespoons fish sauce
• 2 tablespoons fresh lime juice
• 1 tablespoon tamarind concentrate, diluted if very strong
• 1 to 1½ tablespoons palm sugar or light brown sugar
• 1 tablespoon roasted rice powder
• 1 to 2 teaspoons Thai chili flakes, to taste
• 1 small shallot, very finely chopped
• 1 tablespoon finely chopped spring onion
• 1 tablespoon finely chopped cilantro, optional

Fish sauce varies greatly in salt content and tamarind concentrate varies in strength. Always taste before adding extra salt, acid, or sugar.

Making your own roasted rice powder

Roasted rice powder gives nam jim jaew a nutty aroma and a very light thickening. In Thailand, glutinous rice is often used, but regular uncooked jasmine rice can serve as a practical substitute.

1. Heat a dry frying pan over medium-low heat.
2. Add 2 tablespoons of uncooked rice.
3. Toast the grains while stirring until they are evenly golden brown and smell nutty.
4. Let the rice cool completely.
5. Grind finely in a mortar and pestle, spice grinder, or a strong blender.

It doesn't necessarily need to be ground into an extremely fine flour. A little bit of texture is part of the sauce. Store any leftover rice powder in a dry, airtight container.

Making nam jim jaew

1. Put the palm sugar and fish sauce in a bowl and stir until the sugar has largely dissolved.
2. Add the lime juice and tamarind.
3. Stir in the chili flakes and roasted rice powder.
4. Add the shallot, spring onion, and cilantro if using.
5. Let the sauce stand for 10 minutes so the flavors can meld.
6. Taste and adjust with extra lime for freshness, fish sauce for saltiness, sugar for balance, or chili for more heat.

The sauce will thicken slightly as the rice powder absorbs moisture, but it should remain pourable.

What should nam jim jaew taste like?

A good nam jim jaew is not simply sweet and spicy. The flavor needs tension:

• Salt and umami: from fish sauce.
• Fresh acidity: from lime.
• Deeper acidity: from tamarind.
• Heat: from roasted chili flakes.
• Roundness: from palm sugar.
• Roasted aroma: from rice powder.

If the sauce is flat, it often lacks acidity. If it is aggressively salty, do not just add sugar, but also a small amount of lime or water. If it is too sweet, restore the balance with fish sauce and acidity.

What do you serve nam jim jaew with?

Gai yang

The sauce is a classic pairing for Thai grilled chicken. The acidity and chili cut through juicy chicken and roasted skin.

Moo ping

Sweet pork skewers get contrast from tamarind, lime, and fish sauce. Serve the sauce alongside the skewers rather than as an early glaze, because fresh herbs and sugar can burn over the fire.

Grilled beef

Slice steak or flank steak into thin pieces and serve nam jim jaew separately. The sauce goes well with a strong crust and medium-rare meat.

Pork neck

Marbled pork benefits from the sour, spicy character. Use the dipping sauce only after grilling so the meat can sear properly.

Mushrooms and eggplant

Nam jim jaew also works well with hearty grilled vegetables. For a fully plant-based version, use a suitable vegan substitute for fish sauce and re-check for salt and umami.

Is nam jim jaew a marinade?

Traditionally, nam jim jaew works primarily as a dipping sauce. Do not automatically use it as a marinade. Its high salt and acid content can significantly affect the surface of the meat, and fresh onion and herbs can burn over direct heat.

For marinating, it is better to create a separate Thai marinade using garlic, cilantro root, white pepper, fish sauce, and a controlled amount of sugar. Serve the fresh nam jim jaew alongside the cooked dish afterwards.

Storing nam jim jaew

The sauce is best when fresh, as the lime and herbs have a bright flavor. Store it covered in the refrigerator and preferably use it within two days. Stir before serving, as the rice powder and herbs may settle to the bottom.

If you want to prepare ahead, mix the fish sauce, sugar, tamarind, and chili earlier. Add the lime juice, shallot, spring onion, cilantro, and rice powder shortly before serving.

Allergens and safe preparation

Fish sauce contains fish. Always check the label for other allergens and product information. Use a clean spoon and do not let the sauce come into contact with raw meat or used marinade.

It is better to serve dipping sauce for multiple guests in small individual bowls. This prevents cutlery that has touched raw or semi-cooked meat from ending up in the shared sauce again.

Common mistakes

• Using too much sugar: nam jim jaew should remain fresh and spicy, not syrupy sweet.
• Grinding untoasted rice: the nutty aroma only develops during roasting.
• Burning the rice: work over medium-low heat and keep stirring.
• Measuring all ingredients blindly: fish sauce and tamarind vary by brand; tasting remains necessary.
• Grilling the sauce over the meat: serve it as a dip for the best fresh flavor.

Thai BBQ flavor in one bowl

Nam jim jaew shows that a BBQ sauce does not have to be thick, sweet, or smoky. With fish sauce, lime, tamarind, chili, and roasted rice, this dip provides exactly the contrast that grilled meat needs.

Serve it during an evening featuring dishes from the overview of global BBQ street food, or discover more sauces and dips in the BBQ sauce encyclopedia.