when i was in zanzibar i had some of their speciality chili "sauce".
i should have been warned when the stuff came as a little green paste in a little tiny ceramic crucible.....
if not the fact that when i then spread the whole lot on a little bit of bread and popped the lot in my mouth the guy that brought it over nearly collapsed should have been a warning.
there was a delay of about 10 seconds before my mouth, tongue, throat and lips felt as if they had been disintegrated.....somewhere else felt the same the following morning.....it had lost none of its potency.....