Mix the flour and salt in a large mixing bowl with a dough hook and slowly add in the yeast mixture. Gradually add 1 cup warm water and mix until the dough comes together into a ball that is not too wet (you may not need all of the water). If the dough is sticky, add a little bit more flour. Turn out the dough onto a floured surface and knead until the dough is smooth and elastic, 2 to 6 minutes. You can do the thumbprint test: press in the dough with your thumb and it should bounce back when it's ready.