The PhD is a doctoral degree, specifically called a "doctor of philosophy" degree. This is misleading because PhD holders are not necessarily philosophers (unless they earned their degree in philosophy!). That said, PhD recipients are able to engage in thought experiments, reason about problems, and solve problems in sophisticated ways.
PhD in Food and Beverage Studies
Culinary training is an important field, which can provide you more information related to some of the techniques that can further enhance skills as well as knowledge.