Due to Sheshawnii's belief in balance, eating meat is a rare occurance, being viewed in poor taste, and will never happen in a formal setting. While it is commonly practiced, the reason for this taboo is the knowledge that everything known comes from the land, and upon death, you return to the land. By eating meat, you run the risk of possibly eating reincarnated friends and family.
Most Sheshawnii are lacto-ovo vegetarian because of this, and the spare lands in each region are often cycled through for crops every few years. Any animal byproduct that doesn't physically harm the animal, such as cheese and milk, are still commonly eaten.