All grilled-food street vendors have their own recipe for the basting glaze used for their anticuchos. You can charm them all you want as they sop up the glaze with a corn husk brush, but you’re probably never going to get that sauce recipe. Anticucho recipes are held tight.
I’ve played around with my version a few times since I sold anticuchos on the street back in the day. I now know that the flavors get even better after a few days. I like to throw in a splash of beer for extra flavor, but if you’re not a drinker, you can leave it out. In traditional anticucho sauces, the bright, spicy heat of ají amarillo peppers plays off the smokiness of the ají panca peppers. I love the sweeter, red bell pepper version on grilled chicken livers (page 118), tuna (page 125), or any mild-flavored white-fleshed fish. It’s similar to a Spanish romesco sauce.
The sauce freezes well (if making the variation with bell peppers, add them once the sauce thaws). While you're at it, make a double batch, and you’re ready to grill anytime.
Whisk together all of the ingredients in a medium bowl. Cover and refrigerate the anticucho sauce overnight before using or for up to 1 week. Or freeze the anticucho sauce, in batches or spread out flat in a large food storage bag so you can break off little chunks as you need it.
Variación:
Roasted Red Bell Pepper Anticucho Sauce
Omit the ají panca paste and add 1 tablespoon pureed garlic (page 37) and 1½ teaspoons finely ground black pepper. In a blender, puree 1½ large roasted red bell peppers into a paste (or use ⅓ cup jarred roasted peppers, drained). If the blender isn’t cooperating, add a little anticucho sauce to help puree the peppers. Whisk the pepper paste into the anticucho sauce.
Makes about 1 generous cup.