Select Sections from The Carmelite Rule of St. Albert #5

"[17] You are to abstain from meat, except as a remedy for sickness or feebleness. But as, when you are on a journey, you more often than not have to beg your way, outside your own houses you may eat foodstuffs that have been cooked with meat, so as to avoid giving trouble to your hosts. At sea, however, meat may be eaten."

I did not know that the Carmelites were vegetarians!