A wine that tastes strange or off may be perfectly fine. Soapy residue inside the glass react with the wine making it smell stinky or taste odd. Soapy film can make Champagne fizzle and go flat. The best way to wash wine glasses is by hand, and use your hand not a sponge. Crystal glasses should be rinsed several times in hot, but not scalding. Drain Crystal upside down, than turn the glass upright and let it dry in the air. Drops or spots can be cleaned off with a soft cloth. Italians pour a small amount of wine in the glass, and rinse, then throw out. They say this is to prepare the glass to receive the wine.
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