various specialty salts for specific uses are available in stores : for example, tenderizer ( salt fortified with enzymes such as papain, used to tenderize meat ), salt enriched with sodium nitrate or a combination of sodium nitrate and potassium nitrate ( used to cure meats and as a preservative ), and flavored salt ( garlic salt, onion salt, celery salt, etc . ) 各种的特制盐在商店可以买的到,例如:软化剂(盐加强与酵素作用,譬如木瓜蛋白酶使肉软嫩),盐被用在与硝酸钠或硝酸钠和硝酸钾的混合(使用在加工保藏肉和作为防腐剂),和调味盐(大蒜盐、葱盐、芹菜盐等)。