"Not all varieties of Yuca contain the bitter poison. The poison, Glucoside, can be detected by the bitterness--the stronger the bitterness; the higher concentration of glucoside."
That is good to know. The yuca we have here is not bitter in any way, or we never would have been shaping false teeth form it and sticking it in our mouths. I suppose the folks here are lucky.
Probably the more wild yucca varieties has more cyanide while the cultivated yucca has some cyanide but most has been bred out of it.
I read citrus was originally bitter, that oranges etc. had to be bred to be as sweet as they are today