Sourdough bread

Preheat the oven to 200°C.Mix all the ingredients (except the onion, herbs and cheese) with 100 g of the starter dough (see below) and knead for 10 minutes.Set aside for 1 hour to rise, then shape into a rope and layer with the whole onion, herbs and grated cheese.Wind the dough around the onion and set aside to rise for a further 30 minutes.Bake for 40 minutes or until golden.To make the starter dough, mix together all the ingredients and set aside to rest for 1 hour before using.Cook’s note: You can keep the starter in the fridge for up to four days.