handful of chopped basil and mint (optional)
6 cherry tomatoes, halved (optional)
1 small courgette, grated
2 tbsp black olives, pitted and roughly chopped (optional)
1 tsp baking powder
陆 tsp bicarbonate of soda
录 tsp or a pinch of salt (optional)
200g/7oz self-raising flour
5 tbsp sunflower or vegetable oil
130ml/4fl oz buttermilk
90g/3oz cheddar, grated, plus extra for topping
1 free-range egg
20g/1oz Parmesan, grated
3 tbsp roughly chopped chorizo (optional)