Authentic Puerto Rican Sofrito

Step 1
Set the oven rack about 6 inches from the heat source and preheat the oven's broiler. Line a baking sheet with aluminum foil.

Step 2
Cut green bell pepper and red bell pepper in half from top to bottom; remove stems, seeds, and ribs. Place peppers cut-side down onto the prepared baking sheet. Lightly brush with 2 teaspoons olive oil.

Step 3
Roast under the preheated broiler until skin on peppers has blackened and blistered, 5 to 8 minutes. Transfer to a resealable plastic bag. Seal to let peppers steam as they cool, about 15 minutes. Remove skins under running water and discard. Chop flesh into large pieces.

Step 4
Place pepper pieces, sweet chile peppers, onion, scallions, tomatoes, garlic, cilantro, culantro, olives, oregano, and capers in a blender or food processor. Blend, adding 1/2 cup olive oil and water in batches, until mixture is pureed but some chunks remain.

Step 5
Divide blended mixture among four 16-ounce containers, filling each 3/4 of the way. Top each with 2 to 3 tablespoons olive oil to help preserve mixture. Close containers and refrigerate.