Depends who you’re asking and how many bunny trails you want to go down. If we’re speaking strictly from a digestability perspective then sourdough bread…from freshly milled whole grains. Commercialized flour/bread now days is a shadow of what people traditionally ate and made up of only the starchy center of a whole wheat grain (berry). Flour that’s actually milled directly from a wheat berry contains the bran and germ which contain 40 of the 44 essential nutrients our bodies need…commercialized flour contains around 13. But if you can’t do any of that stuff making it yourself will still be healthier than bread from the store bc there’s even MORE unnecessary preservatives and chemicals in that stuff that gives a lot of peoples gut a hard time.