How do I get rid of the taste of Onions in my mouth ?

Chew some fresh parsley..it really works

Fresh parsley neutralises any bad breath odours (mouthwashes only work if the bad breath is due to bacteria, and onions aren't!) Also useful are sugar-free mints - Smints for instance. The lack of sugar in them doesn't feed the bacteria in the mouth so they don't smell bad and the mint neutralises the onion.

TCP mouthwash. I'd prefer the onions though.

Suck on a teaspoon. For some reason, stainless steel neutralises strong odours like onion and garlic. Next time you chop onions, run your hands round the inside of your sink (presuming it's a steel one). Smell gone.

A big sprig of parsley (fresh). Then a good brush of the old teeth.

Mouthwash + brush teeth + tongue thoroughly, those sprays you can get for bad breath.

have a drink of Pernod it will not get rid of the onion taste but you feel better about it later

chew garlic bulbs...xxx

try chewing on some fresh parsley - works for garlic as well