In a large bowl mix the water, yeast, and 1 Tablespoon of the sugar to start yeast. Scald milk in sauce-pan, stir in the rest of the sugar, margerine, salt, vanilla, and the well beaten eggs. When mixture is luke-warm, stir in the yeast mixture and 4 cups of the flour. Beat until well blended and smooth. Add enough of the flour to make dough thick enough to work with. Remove to floured board, & let rest 10 minutes.
Knead till rubbery then place in oiled bowl, cover and let rise until double in bulk -- about 2 ½ hours. Remove to floured board, knead lightly, divide in half, then form to make Doughnuts, Long Johns, or Cinnamon Rolls.