<|im_start|>user
Does having a real cork, artificial cork, or a screw-top have any impact on the quality of a bottle of wine?<|im_end|>
<|im_start|>assistant
Generally, no. There is little evidence to suggest any one closure is more superior than another for most wines. It is more important to have an airtight seal on a bottle of wine so as to prevent introduction of air into the bottle which would cause oxidation of the wine inside.<|im_end|>
