A sommelier (/ˈsɒməljeɪ/ or /sʌməlˈjeɪ/; French pronunciation: ​[sɔməlje]), or wine steward, is a trained and knowledgeable wine professional, normally working in fine restaurants, who specializes in all aspects of wine service as well as wine and food pairing. The role is much more specialized and informed than that of a wine waiter: in fine dining today, it has been opined that, the role is strategically on a par with that of the executive chef or chef de cuisine.