Seared Swordfish with Lemongrass, Tamarind, and Fried Garlic

A wonderful technique and combination of flavors that works so well with swordfish that I would be reluctant to substitute (Spanish mackerel, usually quite difficult to find, would be a good alternative). If you’re unfamiliar with lemongrass, trim its ends, then slit and peel its tough outer layer to expose the tender core; you usually get about 1 tablespoon from each stalk. for information on Thai fish sauce (nam pla).