Think of rendang as a concentrated, caramelized coconut curry. Once the meat is tender, the coconut milk is briskly reduced. When all the water boils off, the meat, sugars, curry paste, and coconut solids start to fry in coconut oil. This caramelizes the mixture and turns the stew a deep brown. The only downside to this fantastically delicious dish is that rendang requires vigilance and frequent stirring, especially toward the end when the mixture tends to scorch if not tended to (we also highly recommend using a splatter screen). The payoff is well worth it.
Soak in water for 30 minutes:
Drain the chiles and place in a food processor along with:
Process to a thick paste, scraping down the sides of the bowl as needed. Heat in a large skillet or Dutch oven over medium-high heat until shimmering:
Add the paste and fry until browned and fragrant, about 5 minutes. Add:
Mix the beef together thoroughly with the paste, then add:
Bring the mixture to a simmer. Cover, reduce the heat to low, and simmer, stirring occasionally, until the beef is nearly tender, about 1 hour. Uncover, increase the heat to medium-high, and bring to a lively simmer. Reduce the mixture until the coconut milk has nearly evaporated and the paste and beef start to fry and turn brown, 25 to 30 minutes. Stir the mixture every 2 minutes as the liquid reduces, scraping the bottom and sides of the pan to make sure the sauce does not scorch. It will sputter, so partially cover the pan or use a splatter screen. For the last 10 minutes, reduce the heat to medium and stir more frequently. If the thickening liquid bubbles too violently, or if it starts to brown more quickly than you care to scrape the pan, reduce the heat. When the mixture stops sputtering and starts frying, break up the meat a bit with a spatula and fry over medium-low until the rendang is mahogany-brown. Push the meat to one side, tilt the pan, and spoon off as much fat as possible. Pick out the whole spices and discard. Stir in:
Season to taste with:
Serve immediately over: