This post might be interesting for those of you into baking out there. Many bakeries are willing to sell ingredients for your baking needs. For the most part, all you have to do is ask!
One particular bakery in Tsukuba (and Moriya), Couronne, readily sells ingredients to customers. Upon request you can get a list of materials up for sale. Peanut butter, flour (all types), chocolate chips, baking powder, dry and wet yeast, dried cranberries, whipped cream, block-style cheese, mixed meltable-type cheese, generic and Kiri cream cheese, almonds, walnuts, pecans…and so on!
The organic bread shops in Amakubo and Kasuga sell 100% whole wheat flour on request. It is much cheaper (and perhaps higher quality) than the whole wheat you can find at supermarkets around here.