What Exactly is a Mustard Sommelier?

 OLM chats with Maille mustard sommelier, Harry Lalousis “Sommelier comes from the ancient Gaelic word for ‘someone who knows’ or ‘someone who has knowledge of,’” explains Harry Lalousis, Maille’s mustard sommelier. Although we usually associate the word with wine, Lalousis explains that the term can apply to a variety of