Lemongrass contains citrol, the same flavor component that’s in lemon zest, and has a similarly citrus-like flavor and aroma that’s especially prized in Southeast Asian cuisines.

1 stalk lemongrass, ends trimmed, quartered
2 large shallots, peeled
3 red Fresno chiles or red jalapeños, stemmed
2 thick slices fresh ginger
2 garlic cloves, crushed
1 tsp. kosher salt
1 can (14 oz.) coconut milk
Juice and zest of 2 limes

Whirl lemongrass in a food processor until finely chopped. Add shallots, chiles, ginger, and garlic and whirl until minced. Put lemongrass mixture in a nonreactive baking dish and whisk in salt, coconut milk, and lime juice and zest. Add seafood and turn to coat.