My wife had trouble on how to dice an onion when we first met, and here is a trick I taught her to make it easier for her to work with onions.
The trick is to leave the root connected.
To dice an onion:
- First cut the onion in half, do not cut off the root.
- Peel off the outer skin.
- Lay the onion on the flat side.
- Cut sections perpendicular to the root.
- Be sure to NOT cut through the root.
- Now cut perpendicular to your previous cuts.
You now have diced onions.