If you can find Fermipan or Saf instant yeast, those would be the best choices for this recipe. Otherwise Red Star or Fleischmanns is just fine. Use a dough hook of course, with your mixer for this recipe or a bread machine also is handy to prepare the dough. Challah is a most amenable dough. If your guests (or family) aren't fond of raisins, leave them out or use dried cranberries or chunks of diced apple. This is a feathery, sweet, beautiful challah that anyone can make.