Lovely tomato & rose petal harissa

INGREDIENTS

• 350 g mixed, ripe tomatoes, halved
• 200 g fresh red chillies
• 4 cloves garlic, unpeeled
• olive oil
• sea salt
• freshly ground black pepper
• 2 teaspoons cumin seeds
• 1 teaspoon coriander seeds
• 1 teaspoon smoked paprika
• 1 handful rose petals, washed
• 3 tablespoons rose water
• 2 tablespoons caster sugar
• 1 splash red wine vinegar
• 1 tablespoon extra virgin olive oil