Add you wheat flour in a bowl and add half cup flour mix make a sticky dough put it in a container with plastic wrap and leave it in a dry and cool place for 24-48 hour

Then after the hours pass take half of the dough out and throw it away and put half cup flour and water and mix repeat the same process for 2 weeks take half dough out and put flour and water repeat everyday after 2 weeks it will have a mild sour taste and you will have 1 cup of starter