Pour in 200 ml of oat milk, corn (any vegetable) oil, 50 g of sugar, salt, add vanilla, orange zest, sifted flour and pour in the sourdough. Knead the dough.
The dough turns out soft, lively, plastic. Since flour can be different (density, humidity, gluten content), there is no need to add all its amount to the dough at once. You may need less or more flour.