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 . ) 各種的特制鹽在商店可以買的到,例如:軟化劑(鹽加強(qiáng)與酵素作用,譬如木瓜蛋白酶使肉軟嫩) ,鹽被用在與硝酸鈉或硝酸鈉和硝酸鉀的混合(使用在加工保藏肉和作為防腐劑) ,和調(diào)味鹽(大蒜鹽、蔥鹽、芹菜鹽等) 。