Why taste is as regional as dialect

Prof Taylor said: “Taste is determined by our genetic make-up and influenced by our upbringing and experience with flavours.

“Just as with spoken dialects, where accent is placed on different syllables and vowel formations, people from different regions have developed enhanced sensitivities to certain taste sensations and seek foods that trigger these.”

The part I can’t quite wrap my head around is that this was a test done with British cuisine. One has to question if it is applicable to a broader population.