Said thread having left me with an irresistible urge to tell people how I think onions are best cut. As this is high on the list of Worst Things I Could Do over there - quite right, too - I have come back here to do it.
So, these are My Opinions:
0) Dried onions and frozen onions - which in Canada can be bought in large bags at M&M Meats, among other places - are imo under-appreciated.
1) Use your very sharpest non-serrated blade. The onion juice that makes you cry is released by crushing the flesh of the onion, so the more you minimise this the less irritant is released.
2) Putting the onion in the fridge for an hour before you cut it does, actually, help.
3) Keeping your mouth tightly shut from the moment you cut into the onion until you walk away from the cutting board helps a lot, but if you once open your mouth it stops working. I do not know why this is so.
4) Cut the ends off first, so that you have flat spots to stand the onion on rather than it being able to roll around. This may save your fingers if you do get teary-eyed.
5) When you put them into the pan to cook, starting them off on low will minimise the amount of onion juice that gets into the air to irritate your eyes.
6) If you do end up with streaming eyes, rinse out your mouth and nostrils, not your eyes. Putting a cool washcloth over your eyes is soothing and gets your lashes clean, but your eyes are already cleaning themselves.
7) Food processors are not, in my opinion, suitable for chopping onions due to an excess of crushing.
Please share your opinions about onions freely - with impeccable courtesy and bountiful goodwill - in the comments. Anonymous commenting is on (on DW) but screened, please do sign your anonymous comment in some fashion; initials, nicknames, etc. are just fine, I just want to be able to tell y'all apart.
n.b. Rice Cookers may also be discussed.