I'm mostly familiar with animal feed, where nutritional quality weighs quite heavy during selection. For human consumption I assume there are some base nutritional standards when applying to enter the market with a new breed, but might heavily depend on your region.

Plant breeders have also been busy reducing bitterness/tannins in various vegetables like brussel sprouts and canola oil, so things are in fact less bitter than 30 years ago.

Psycho Crazy

Almost didn't see the quotation marks man