Cheat's sourdough

Sourdough starter

• 100 g plain flour
• 75 g warm water
• 1 pinch salt
• ⅛ tsp dried instant yeast

Bread

• olive oil spray
• 50 - 70 g potato peeled
• 750 g water
• 500 g baker's flour
• 1 tbsp oil
• 1 ½ tsp salt
• ½ tsp dried instant yeast
• warm water for sprinkling