I have noticed a cidery thing, but had racked that up to staleness. The first pack I bought was delicious, crisp and dry. The second pack, still in my fridge, tastes like it sat out in the back of a truck for a while. No hops, that typical stale sweetness, and yes I also get that tart cidery thing. Maybe my tastebuds were off for the first pack? If so I need to find out how to make them "off" more often, might save myself some money...