Discard the veins and seeds of 10 ancho peppers

Using tongs roast the pepper right over fire until it turns black, flipping as necessary

Have a bowl of water handy to put the peppers in and repeat until all 10 are roasted.

In a spice grinder grind the cloves, allspice, achitote seeds and cumin.

In a blender, add the garlic, oregano, white vinegar, pepper, salt the ingredients from the spice grinder and the roasted peppers.

Blend all the ingredients together to form a black paste

Use what is needed in your recipe and freeze the rest.