Massaman curry is a rich, relatively mild Thai curry. Cardamom, cinnamon, cloves, star anise, cumin, bay leaves, nutmeg and mace are combined with more local flavors such as dried chili peppers, coriander, lemongrass, galangal, white pepper, shrimp paste, shallots and garlic to make massaman curry paste.
Make the Garlic Butter Sauce. Melt the butter in a large pan over medium heat. Add the chopped garlic and cook until fragrant. Pour the sweet chili sauce, oyster sauce, and chicken powder. Continue cooking over low heat. Add the crabs including the crab fat (butter). Toss until the crab is drenched in the sauce.
