You most certainly can make a good cider from frozen concentrate! I use Tree Top frozen apple juice concentrate (FAJC)... 100% USA apples and in my opinion has better apple flavor. FAJC is made from "sweet" apples, which aren't the traditional sharper, more acidic, "cider" apples. Some good info at
http://howtomakehardcider.com/making-your-cider/:
"You'll want to
malic acid ( the natural acid that is in apples) or tannic acid (from grapes or tea bags). This gives the cider a bit more “complexity.” Traditional hard cider was made from apples that are so tart they are unfit for eating–think crab-apples. The sweet cider at the mill or store is usually just juice from sweet apples, so adding tannin or acids can give you more bite and old-fashioned cider flavor. I like to use this
Acid Blend ($6)
of both malic and tannic acid, or try whatever USP tannic acid, wine acid or grape tannin can be purchased from your brew store."