Gather the ingredients.
Grind the annatto, coriander seeds, oregano, cumin seeds, peppercorns, and cloves in a spice mill or with a mortar and pestle.
Place the ground spices with the salt, garlic, and bitter orange juice in a blender and process until it is smooth.
Store your achiote paste in an airtight container in the refrigerator. Use as instructed in your recipe.
