Pistachio-Lime Butter

2 tablespoons chopped salted pistachios
1 tablespoon chopped fresh chives
1 tablespoon fresh lime juice
4 tablespoons (½ stick) unsalted butter, room temperature
Kosher salt and freshly ground black pepper

For topping on baked/grilled fish

Based on: https://www.bonappetit.com/recipe/seared-cod-with-potato-and-chorizo-hobo-packs