I try hard to periodically test my notions about things that I believe, even those that are experientially based. So a couple of weeks ago, I had a scoop of store-brand vanilla ice cream; it was awful. It was so bad, in fact, that I used some chocolate sauce to drown the flavor. Now there is a number of brands that I find acceptable, but most store brands just don’t taste that good to me.
A few years ago, I had a bad cold, and I bought the generic equivalent version of Vicks NyQuil. It was the most vile-tasting thing I had ever consumed. Not that Nyquil is exactly yummy, but it isn’t bitter. (And I hate using NyQuil; I feel as though I were stoned for about four hours after I get up.)
There are generic equivalents to Cheerios cereal that are acceptable, but I do tend to buy the name brand because of an unfortunate incident of buying an oat cereal that approximated the taste of cardboard.
My wife is totally off the generics for dishwashing.