You see isekai stuff having natural modern vegetables and fruit like they evolved that way "naturally" in the wild when its really bred to be like that by farmers.
TBH i mostly just assumed magic or the gods was involved in making the produce edible and palatable. Even a few of the more farm related storylines included selective breeding and genetic manipulation. Though i will note just as many stories used native fruits, vegetables and grains as food.
Dont you think all those wild ancient fruits are so alike Oda's devil fruit? Especialy the watermelon and banana.
In German it's easier to notice: Brussels sprouts = RosenKOHL Cabbage = KOHL Kale = GrünKOHL Broccoli = BroKOHLi Cauliflower = BlumenKOHL Kohlrabi = KOHLrabi