@markusl That’s definitely true. A common dish in Britain for centuries was just beer, bread, and cheese; the original ploughman’s. Today this would be considered rations. Nonetheless, food cooked in a little fat/oil is just so much tastier, I find it hard to believe that people who had the same tasting receptors we do today wouldn’t have sought out ways to improve the taste. Even monkeys have been observed washing sweet potatoes in sea water because it’s tastier that way