Dissolve yeast in 1/4 cup warm tap water. Add 1/2 teaspoon sugar.
Wait 5-10 minutes for mixture to foam.
Add remaining 1/4 cup warm water and 1/2 cup milk.
Combine dry ingredients.
Add yeast mixture and oil to dry ingredients and mix with hands into a ball. Knead 5 minutes.
Add flour if too sticky or small amounts of water if too dry.
Let rise, covered with a towel, 1 hour or until doubled in size.
Punch down dough to remove all air; divide in two equal parts and roll to fit two round pizza pans.
Poke crusts multiple times with a fork to release air bubbles during baking.
Par-bake at 400 degrees for 4-5 minutes.
*Par-baked crust can be prepared in advance or used immediately.