Easy cheese fondue - Good Food Middle East

Ingredients

• 2 tbsp cider vinegar
• 1 tsp cornflour
• 250g cheddar, grated
• 250g Gruyère, grated
• 3 tbsp crème fraîche
• 4 thick slices bread, such as sourdough, chopped into chunks
• 2 tbsp olive oil
• 2 carrots, cut into batons
• 2 peppers, deseeded and cut into strips
• 2 celery sticks, thickly sliced
• 200g pack mini salami or 1 thin salami cut into bite-size chunks