This 25-minute recipe for spicy, tangy, flaky fish relies on a bed of aromatic ingredients — ginger, garlic, onion, sesame oil — and a saucy blanket of tamarind. The easy sauce comes together quickly because the key ingredient, common in South Asian, Southeast Asian and Mexican cooking, is zingy tamarind concentrate. In addition, sweetness from sugar adds balance while chile powder and Thai green chiles bring the heat. It’s a lively, complex dish with a satisfyingly simple preparation that’s out of the oven and on your weeknight table in no time. Serve with white rice.
