To simplify this recipe slightly, you may skip the roasting step and use 1 cup canned whole tomatoes, drained, instead of fresh, ½ cup drained jarred roasted red peppers instead of fresh, and 1 garlic clove, minced, instead of the roasted garlic.
Position an oven rack 4 inches below the heat. Preheat the broiler. Line a rimmed baking sheet with foil and place on the baking sheet:
Broil, turning the pepper occasionally, until the tomatoes are blackened in spots and the pepper is well blackened all over, about 15 minutes. The garlic will be done (charred and soft) before the pepper and tomatoes. Transfer the pepper to a bowl and cover with a plate. Let steam until cool enough to handle, then peel off the blackened skin, remove the stem, and scrape out the seeds. Peel the garlic cloves.
Meanwhile, add to a small heatproof bowl:
Cover with boiling water and soak for 15 minutes.
Add to a food processor and pulse until finely chopped:
Drain the soaked chiles well and add them to the food processor along with the bell pepper, tomatoes, garlic, and:
Process into a chunky paste. With the machine running, slowly pour in:
Season to taste with:
Store, refrigerated, for up to 1 week.