Which word signifies moderation, especially regarding food and drink?

The word that signifies moderation, particularly in relation to food and drink, is "abstemious." This term is derived from the Latin word "abstemius," which means "sober" or "self-restrained." Someone who is abstemious practices self-discipline, especially when it comes to indulgences such as eating and drinking, which may lead to excess. The context of moderation encompasses not only physical consumption but can also imply a broader sense of restraint in various aspects of life.

In contrast, the other words in the list have different meanings. "Aesthetic" relates to the appreciation of beauty or art and does not imply moderation in consumption. "Wry" refers to a dry, humorous twist or a sarcastic remark, which is unrelated to the concept of moderation. Lastly, "apathy" denotes a lack of interest or concern, which again does not connect to moderation in habits or consumption. Thus, "abstemious" is the only term that directly captures the essence of moderation in dietary habits.