Allegra McEvedy creates the perfect Mexican brunch in episode 9 of Perfect.
• If you have a gas stove, try roasting them directly over an open flame on the stovetop. Don't be overly concerned that the skins look very charred. The outer skin may look burned but the flesh beneath will be succulent and keep its usual color. Of the sweet bell peppers, red and orange seem to offer the tastiest results but spicier peppers like the poblano, serrano or jalapeno also respond very well to roasting.
• Make sure that your kitchen is well ventilated, especially if you're charring peppers directly over an open flame. Don't wash the freshly roasted peppers; this will wash away some of the flavour.