I think it depends on the food and lifestyle of that place.
I saw Broccoli in India almost 5yrs back. I have not seen strawberries when I was in India. My dd is so surprised. So, I asked her did you see 'velakai' here in US? She has no clue what it is. I dont know what you call in english but the outer cover is porous,inside is soft and makes yummy chutney.
Me too had no clue what avacado was when in India. Then bok choy, asparagus are also the ones. I was shocked for a second to see cactus leaves in farmers market. I was like who in the world eats these? I came to know mexicans make tasty dish out of it....scared to even try.
Adara