Prawns with red chilli sambal

• 10 small red Asian shallots, roughly chopped
• 6 garlic cloves, roughly chopped
• 9 large red chillies, seeded

In a food processor or high-speed blender, blitz together the shallots, garlic, chillies and tomatoes to a rough paste.

Heat the oil in a large frying pan over a medium heat. When hot, scrape in the paste and add the lime leaves. Season with the sugar, salt and black pepper. Cook for about 10 minutes, stirring often, until it darkens a shade and has lost its rawness - the aroma should b