Blend Spice Paste: Combine shallots, garlic, ginger, galangal, chilies, and spices in a blender until smooth.
Sear Beef: Brown beef cubes in oil in a heavy pot and set aside.
Sauté Paste: Cook spice paste for 3–5 minutes until fragrant.
Add Liquid u0026 Aromatics: Return beef to pot and add coconut milk, broth, lemongrass, lime leaves, turmeric leaves, tamarind, sugar, and salt.
Simmer Slowly: Cover partially and cook on low for 2–2.5 hours, stirring occasionally.
Adjust Seasoning: Taste and adjust flavors. Remove aromatics.
Serve: Pair with rice and optional garnish.