I often ask that because recently I’ve been hearing in groups that generic and/or Costco butter hasn’t been performing properly. I haven’t been able to replicate the issues, but just as a forewarning – I have had little things where Walmart or Costco butter cookies don’t look as pretty as ones made with, say, Challenge, but they still turn out. Challenge is my favorite, and I stock up when it’s on sale, but it’s so expensive! I also ask that too because a lot of time people swap margarine or tub butter and, well, that’s not butter, ha!