It sounds like you’re talking about a food your grandmother (“nana”) introduced you to, but I don’t know which food it was.
If you’d like information about it, upload a photo or tell me the name of the dish/ingredient.
If you’re looking for a polished caption, you could write:
“My nana said she ate this all the time growing up. I’d never even heard of it before, but after trying it, I absolutely loved the taste!”
Or:
“A taste from my nana’s childhood! I’d never heard of this before, but it was surprisingly delicious.”
