Yes..
I was invited once for Filipino cocktails in our local squatter vicinity.
The hourdervs were really very tasty but remained a secret recipe until after I had scoffed the lot.
Its been more than 5 years and since I have not noticed any type of foam coming out of my mouth it looks as if I have got away with it.
Anyway..Thats nothing. I knew a bloke that was served monkey brains straight from the monkey in a posh Chinese restaurant once.
Bugger ate the lot.