* If you don’t have a gas stove, you can use your oven’s broiler or a grill, using the same method and checking frequently.
** If you don’t have a food processor, you can easily do this by hand. Very coarsely chop the red peppers on a cutting board, add them to a bowl, and use a potato masher to combine the peppers with the rest of the ingredients. You could also use a mortar and pestle, as Ottolenghi suggests. It’s harder to over-process by hand, but be careful to stop as soon as it turns into a chunky paste.