I had these for the first time in New York on the recommendation of an immigration officer at JFK. I had just flown in from London in the midst of “Snowmageddon” and we were the last flight to land.
The guy was clearly bored as he chatted away for half an hour. At first, I thought he was trying to trip me up but actually he was just being friendly.
Anyway, it took some time to replicate the recipe but I got there in the end.