Believe it or not, I am posting yet another pastor recipe! I love this stuff! Never, ever, forget the extra grilled pineapple, it makes them something special. The meat needs to marinate from 4 hours up to 1 day. From Bon Appetit May 2008. Cook's tip: To make your own guajillo chile powder, finely grind about 6 large dried seeded guajillo chiles in a spice mill to yield about 1/4 cup powder.