Add about 1/2 cup of lukewarm water , sugar, yeast and mix everything together. Let the yeast bloom.
If the yeast does not bloom after 10 minutes, discard and start again.
Once the yeast mixture has bloomed, in a big bowl or your stand mixer, add in the whole wheat flour, salt, yeast mixture and mix everything.
Knead the dough by adding water slowly. You should require a total of 1 cup , plus a bit more or less depending on the flour. Knead the dough until it is springy and forms a smooth elastic ball.
Cover and keep it aside for at least an hour and half or until double in size.