I could get into this in detail and not only bore most readers but risk being called a racist. But I do believe that there are racial differences that are not explained away by upbringing. Dave mentioned his wife's nose for the freshness of food. I have seen that too. It is beyond doubt. OK, freshness has been an imperative for 2500 years if not longer. That is enough to have a genetic effect.

I will name another, and I am as certain on this.

We all love to eat, and we love food that tastes good. But for Asians of all cultures, as unlike as Japanese and Hmong, food can entail what I will call arousal. I am an astute observer of this; I see Asians abruptly ordering another dish in restaurants because they are aroused by what they are eating. It's usually a seafood dish.

I've never once in my life seen anyone do that, unless still hungry.