Sweetcorn fritters with homemade ketchup

INGREDIENTS

• 100g/3½oz plain flour
• 1 tsp baking powder
• salt and freshly ground black pepper
• pinch smoked paprika
• 1 tbsp caster sugar
• 2 free-range eggs
• 75ml/2½fl oz milk
• 350g/12oz sweetcorn
• 6 finely chopped spring onions
• 125-150ml/4½-5fl oz vegetable oil
• 2 tsp vegetable oil
• 1 onion
• 1 stick celery
• ½ bulb fennel
• 2.5cm/1in fresh ginger
• 2 garlic
• 1 fresh red chilli
• 1 tsp coriander seeds
• 2 cloves
• 500g/1lb 2oz plum tomatoes
• 300ml/10½fl oz water
• 100g/3½oz soft brown sugar
• 200ml/7oz red wine vinegar