There are many varities of yeast. Brewers and bakers to name the two most important. The germ of the yeast packs a powerful nutritional wallop combined with great preventitive value. Notable is the product Vegemite, the Australian answer to the apple.  Vegimite is a spread made out of the germ of the yeast.   Yeasts are members of the fungus kingdom with over 1,500 species identified, which by the way…