Any sign that an applicant is connected to their taste-buds is a good sign. Some kind of culinary interest and excitement MUST be present. For work experience I prefer a background in bartending. At Vivace we always hire with a team. My trusted managers and business partner must all approve a candidate before we will take them on.
Human judgment is fallible.
Expand your powers of judgment by using some trusted allies to evaluate job applicants. Never interview a candidate alone. As a high volume business we have enough work to create an entry level position, a barback. This is a tough job which requires performing tasks such as running errands, stocking, and cleaning ashtrays, for little pay. The person who can handle the barback position shows a strong sense of priorities and a strong work ethic.