Ingredients
1 tablespoon plus 1 teaspoon coriander seeds
1 teaspoon fennel seeds
2 teaspoons mustard seeds
2 green cardamom pods
6 cloves garlic, coarsely chopped
2 teaspoons coarse salt
Zest and juice of 2 limes
4 small chiles, coarsely chopped
1 medium onion, coarsely chopped
1/2 cup plain yogurt
Preparation
Toast coriander seeds, fennel seeds, mustard seeds, and cardamom pods in a dry skillet over medium heat until they darken slightly and become fragrant, about 1 1/2 minutes. Grind to a fine powder in a spice grinder (or clean coffee grinder).
Transfer to a blender, along with garlic, salt, lime zest and juice, chiles, onion, and yogurt. Blend to form a smooth paste.
Transfer to a nonreactive dish. Refrigerate until ready to use, up to 3 days.