Show Use of Yeast Yeast Is such an essential constituent constituent ent of bread that It Is difficult to real real- realize realize ize that It Is a comparative Innovation tion that tion-that that man ate wheaten loaves for thousands of generations before any any- anybody anybody body bod thought about It The use of yeast was one of the trade secrets of Paris bakers about 20 years ago the bread chemists explain There was a big scandal when the secret leaked out The bakers were accused of poisoning the public The College of ot Physicians Ph sl lans of Paris went on record opposing yeast leavened bread on the ground that It was not wholesome |