How to prevent tearing when cutting an onion
I prevent tearing when cutting onions by placing an ice cube in my mouth but you can also can soak the onion in water for 20 mins before cutting.
Substitute unripe lemons in place of limes
When I don't have limes to make my sauces I like to use unripened lemons. When the lemon is unripe then the exterior is green. The flavor is pretty similar.