Why I always slice Onions from root to stem

Slice one onion pole to pole and one orbitally; leave both in a container about 10 minutes and smell them.

Pickled onions: slice one half of an onion orbitally and the other half pole to pole into two jars; pour a boiling mixture of equal parts water and vinegar over each; cool in the fridge a couple of hours.

Oklahoma onion burger: halve an onion and slice it very thin on a mandolin both ways; smash the burgers on the griddle, place the onions on them, flip, add cheese and serve on the bun.

Caramelized onions: cook test batches of each slice down slowly for about 45 minutes.