The waxy taste you are experiencing is probably due to eating cold, oily food. If you are eating oily food always heat it up prior to eating.
If this does not solve it, you may want to brush your teeth more often as this could be related to bacteria in your mouth.
If this is really bothering you, consult your dentist or GP.
Any questions, please don't hesitate to send me a message via WikiAnswers.
Johann
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