minutes, but if you also hate lifting weights and need to take breaks, it may take a little bit longer. before you proceed to the next step, it should look like thin, smooth, pancake batter.
now start gradually adding the rest of your flour 1/2 a cup at a time. if you are doing this by hand, you might even want to add it in smaller quantities. each time you add more flour, mix it into the rest of the mixture until the dough has absorbed it all, then add more. your mixture will transform from something you can mix with a spoon, into a stiff dough.
once all of your flour 