Roasted Sweet Beetroot Relish - River Cottage

Ingredients

• 1kg tomatoes
• 2 level tsp sea salt
• 4 garlic cloves, peeled and sliced
• 50ml olive oil
• 1kg young, small beetroot, trimmed
• A little olive oil
• 250g granulated sugar
• 150ml red wine vinegar
• 2 tbsp balsamic vinegar
• 1 large red onion, peeled and finely chopped
• 50g freshly grated horseradish root