Instructions
Step 1: Preparing the Bumbu (Spice Paste)
Blend all ingredients for the Basic Paste (shallots, garlic, chili, galangal, ginger, turmeric) with a little oil into a smooth paste (bumbu).
Heat 2 tbsp of oil in a pot over medium heat. Sauté the bumbu paste for 5-7 minutes until it becomes intensely fragrant and darkens slightly. Add salt and sugar.
Step 2: Adding Meat and Coconut Milk (Gulai Phase)
Add the beef. Sauté it in the paste until it's seared on all sides and coated in the spices (about 5 minutes).
Add the coconut milk, water/broth, bruised lemongrass, kaffir lime leaves, and tamarind paste.
Bring to a gentle boil, then reduce the heat to minimum (it should only bubble very gently). Cook uncovered.
Step 3: Cooking and Reduction (Kalio Phase)
Simmer slowly for about 1.5 to 2 hours. The liquid will reduce by half and the sauce will darken (the Kalio phase). Stir every 15-20 minutes to prevent the mixture from sticking to the bottom.
Step 4: Slow Frying (Rendang Phase)
After 2 hours, the sauce should be thick. Continue cooking over very low heat. Now it is crucial to stir more frequently, every 5-10 minutes, to prevent the sauce from burning. This process transforms the sauce into a dry paste, and the meat begins to 'fry' in the coconut oil released from the sauce.
Continue cooking until the sauce is very dark, thick, and almost dry (another 1 – 1.5 hours). The beef should be tender. This is the final Rendang phase.
Step 5: Serving
Serve the Rendang hot with Jasmine rice. It is also traditionally served with fresh cucumber or other simple vegetables to cut through the richness.