Satay Peanut Sauce (Bumbu Kacang)

About This Recipe

Bumbu kacang — peanut sauce — is arguably the condiment most synonymous with Indonesian cuisine in the global imagination, and making it from scratch reveals how far the restaurant version falls short. Authentic bumbu kacang begins with freshly roasted peanuts ground in a stone mortar or blender, combined with a spice paste (bumbu) of shallots, garlic, galangal, lemongrass, and terasi (fermented shrimp paste) that's been fried in a little oil until fragrant, then enriched with coconut milk, kecap manis, lime juice, and palm sugar to create a sauce of extraordinary complexity. The sauce is used to dress gado-gado (the Indonesian salad), as a dipping sauce for sate (satay skewers), tossed with ketan (sticky rice cakes), or thinned to a dressing for cold noodles. Its consistency ranges from thick and dip-able to thin and pourable depending on the application. Each regional version has personality: Madura's bumbu kacang is richer with coconut milk; Betawi's version is darker from kecap manis; Padang's is fiery with chili.

Ingredients

Serves 6

• 200 graw peanuts, skin-on
• 4shallots, peeled
• 3 clovesgarlic
• 2 cmfresh galangal, peeled and sliced
• 1 stalklemongrass, white part only
• 2red chilies (or to taste)
• 0.5 tspterasi (shrimp paste), toasted(omit for vegan)
• 200 mlcoconut milk
• 2 tbspkecap manis (Indonesian sweet soy sauce)
• 1 tbsppalm sugar or brown sugar
• 1.5 tbsplime juice
• 0.5 tspsalt
• 2 tbspneutral oil
• 150 mlwater, to adjust consistency

Instructions

1. 1

   Roast the peanuts

   Toast peanuts in a dry wok over medium heat, stirring constantly, for 8–10 minutes until the skins blister and the nuts smell nutty. Transfer to a clean cloth and rub to remove skins. Cool, then grind coarsely in a blender or food processor — not to a paste, some texture should remain.

2. 2

   Make the spice paste

   Blend shallots, garlic, galangal, lemongrass, and chilies into a coarse paste using a blender or stone mortar.

3. 3

   Fry the bumbu

   Heat oil in a saucepan over medium heat. Add terasi and fry 30 seconds until fragrant. Add spice paste and fry, stirring, 5–6 minutes until fragrant and slightly darkened.

   Don't rush this step — properly fried bumbu has a rounder, less raw flavor.

4. 4

   Add liquids and peanuts

   Pour in coconut milk and 100ml water. Bring to a gentle simmer. Add ground peanuts, kecap manis, palm sugar, and salt. Stir constantly.

5. 5

   Cook and adjust

   Simmer 5–8 minutes, stirring, until the sauce thickens and the oil begins to pool at the sides. Add remaining water to reach desired consistency. Finish with lime juice. Taste and adjust sweetness and salt.

6. 6

   Serve

   Serve warm with satay skewers, over gado-gado, or alongside fresh vegetable crudités.

Variations

• •

  Gado-gado sauce: add more water and a tablespoon of tamarind paste for a thinner, tangier dressing.

• •

  Vegan version: replace terasi with 1 teaspoon miso paste and a sheet of nori blended in.

• •

  Padang style: increase chilies and reduce kecap manis for a spicier, less sweet version.

Storage

Refrigerate in a sealed jar up to 1 week. Reheat gently with a splash of water, stirring constantly — the sauce will seize if heated too quickly or without moisture.

Frequently Asked Questions