Pineapple and Ancho marinade and sauce

This marinade/sauce is part of my summer project - using dried chillies in all sorts of interesting ways. It is adapted from Milk Street's episode on Tcos al Pasteur. Adapted because their recipe uses ancho powder - and I was using whole anchos. The proportions are slightly different too - because I was doint it from memory. It came out really well - I would definitely do it again. And as a by product, any left over sauce can be added to other salsas to give some extra sweetness and earthiness.

Ingredients

4 Ancho chilis

3 Chipotle chilis in adobo with the sauce that clings to them

4 garlic cloves, peeled but left whole

3 tsp whole cumin seads, toasted and then ground

2T Dark brown sugar

2 1/2" thick pineapple rings, cored. If using canned then either use sweetened and omit the sugar or use water based

1/4 cup neutral oil.

Salt and pepper to taste

Method

Cut the tops off the anchos and deseed the peppers. Toast them over medium heat in a dry skiller until they become fragrant. Pressing them against tha bottom of the pan so that as much of the surface as possible gets the heat. Make sure you flip them over to get both sides done.

Remove  the peppers from the heat and add the whole cumin seads to toast them lightly too. Grind the anchos and cumin in a spice grinder (or use a pestle and mortar) until you have a fine powder. 

Put all the ingredients into a blender and pulse several times until you have a smooth paste.

Before use as a marinade, add a teaspoon of lime juice.

For use as a sauce, warm it through and add a tablespoon of limejuice and some chopped cilantro.