Add <quantity>100<unit>ml</unit></quantity> of water to a bowl

Add <quantity>140<unit>g</unit></quantity> of wheat flour and mix until fully combined

Place the dough inside a container and close it. Leave it in a warm place for 1w to ferment

Add <quantity>50<unit>g</unit></quantity> of water to a bowl. Add <quantity>10<unit>g</unit></quantity> of the fermented dough and discard the remaining

Add <quantity>75<unit>g</unit></quantity> of wheat flour and mix it well

Transfer the new dough to a translucent container

Mark with a piece of tape where the dough ends on the container to keep track of its rise. Cover it and leave at room temperature for 8h to ferment

The sourdough starter is ready. It can stay in the refrigerator as long as you feed it

Enjoy making different types of sourdough bread or even pancakes with it!