The Shulchan Aruch in several places writes that if something is eaten in an abnormal fashion, it gets a Shehakol rather than its usual bracha.1
What defines whether something is a "normal" way of eating something? Most of the people in a locale? In a country? In the world? Most Jews? Some other benchmark?
1 OC 202:3 regarding bitter fruit which was sweetened;
202:12 regarding fruits which are normally eaten cooked but were eaten raw;
204:4 regarding wine which soured;
205:1 regarding vegetables which are normally eaten cooked but were eaten raw;
208:5 regarding eating flour;
and probably elsewhere as well; feel free to add more sources if there are any.