Also, from Reddit:
"
Here is the math
TL;DR:
29.4 grams of cherry kernels x 0.17% HCN = 50mg of cyanide
One cherry pit weighs about 1 gram, so you're going to have to eat about 30 crushed cherry pits to die a horrible death.
UPDATE (2019-06-04): /u/MrMerati reached out and pointed out that the cherry pit amygdalin content cited on that page is (probably) wrong [
Bolarinwa et al.]. So with new values of 0.27% (≈0.016% HCN by mass) for black cherries and 0.4% (≈0.024% HCN by mass) for red, we get the following lowest lethal amounts:
50mg / 0.016% = 312.5g ≈ 313 black cherry pits.
50mg / 0.024% = 208.3g ≈ 209 red cherry pits"
And that's just to get like 50mg
So you'd theoretically need 30 times that much, or 9,000 cherry pits
Although, the 1.5g cyanide painless dose is for potassium cyanide/KCN so I'm not sure how that changes in regard to hydrogen cyanide
This guy dissolves gold with however many cherry pits this is, which I can't tell by eye:
Edit: The 9,000 cherry pits number seems way off, maybe it would be in the 1,800-2,000 range, which is still impractically high