I have found them at Trader Joe's and Concentrate on. Make sure to choose up freeze-dried blueberries, not dried blueberries. Dried (or dehydrated) blueberries are chewy rather then crisp because they do not have all their drinking water eradicated. You can also use a blueberry puree, or perhaps a blueberry https://edwinfyiqx.wssblogs.com/31432774/easy-blueberry-frosting-an-overview