11.   Nutritional yeast is a powerhouse.

12.   Perpte suspects the modified yeast would be perfect for alcohol-free beer, but the food industry in Europe is nervous about genetic engineering.

13.   The yeast in microbrews is a particular problem for some people, and caffeine is a classic trigger.

14.   Though yeast is undeniably a simpler life form than humankind, its cells contain many genes that resemble ours.

15.   Yeast is what sets Belgian waffles apart.

16.   Yeast is a living organism, as susceptible to contamination as we are the common cold.

17.   Yeasts are simple one-celled plants, members of the large Ascomycetes family of funguses.

18.   Even though yeast is only a single-celled organism, it shares many of the same protein functions as more sophisticated lifeforms, including man.