Instructions

1. In a small bowl, combine the cardamom, pepper, cinnamon, mace, cloves, cumin, and coriander. Set the spice blend near the stove. Use a mini or full-size food processor to finely chop the garlic, ginger, lemongrass, chile, and shallot. Keep by the spices. Trim the chicken of large fat pads and set nearby.
2. In a 4-quart (4 l) pot, heat the oil over high heat. When hot enough to sizzle a mustard seed upon contact, add all of the mustard seeds. Swirl or stir for about 10 seconds, until a few seeds crackle and pop, then add the shallot mixture. Cook for 3 to 5 minutes, stirring, until no longer raw smelling.
3. Lower the heat slightly, add the spice blend, and stir for about 30 seconds, until toasty and a dark chocolate color. Add the chicken, turning to coat with seasonings. Add the salt and coconut milk, which should barely cover the chicken; add water if necessary. Adjust the heat to simmer, uncovered, for 30 minutes. Stir occasionally to prevent scorching; the pot contents will shrink to roughly half the original volume. Remove from the heat and let cool for 20 minutes.
4. Transfer the chicken to a plate and hand shred, with the grain, into pinkie finger–wide pieces; set aside. Pour the sauce into a large nonstick skillet. Over high heat, vigorously simmer for about 6 minutes, stirring frequently, until reduced by half and pools of coconut oil dot the surface. Lower the heat slightly, then add the chicken and any accumulated sauce. Cook, stirring frequently, for 8 to 12 minutes, until the chicken has darkened to a rich brown and is coated with crusty seasoning; the sauce will no longer be visible and the chicken will gently fry in hissing oil.
5. Cool slightly, then season with extra salt, if needed. For great flavor, enjoy the chicken slightly above room temperature in banh mi.

Notes

1. To let the rich, spiced chicken shine in a black curry chicken banh mi, use just a bit of regular mayo and omit or go light on Maggi. Add pickled shallots, chile, cucumber, and cilantro. Try as a regular banh mi or slider.
2. Refrigerate for up to 3 days, reheating in a microwave oven or a skillet over medium heat, with a splash of water to moisten and refresh. Perfect for make-ahead banh mi. Instead of fresh chile, add 1/2 to 1 teaspoon of cayenne to the spice blend. Or substitute 2 tablespoons of a favorite curry powder for the spice blend (our Sri Lankan Curry would be perfect). If you have fresh curry leaf (Murraya koenigii), fry 5 or 6 large leaves along with the mustard seeds; remove the leaves before reducing the sauce