Skillet-Grilled Fish Tacos with Cilantro-Lime Crema

INGREDIENTS

1 cup

(heaping) cilantro, about 1 ounce

2 tbsp

fresh lime juice, plus more to taste

1 cup

sour cream

1 tsp

sugar

1/4 tsp

kosher salt, plus more to taste

1 lb

fillet of haddock, cod, or grouper (or other), 1/2- to 1-inch thick

Kosher salt

Cayenne pepper to taste, see above

Grapeseed or other neutral oil

Tortillas, (I like Whole Foods\' soft corn tortillas)

Slaw, see above

Lime wedges for serving