Original Christianity

Was the Last Supper Vegetarian?
The main issue is Jesus' attitude towards the temple 

Jesus and the Moneychangers, by J. R. Hyland
It wasn't about the moneychangers, it was about animal sacrifice

Against the Scholars
Contrary to Marcus Borg and John Crossan, Jesus was against animal sacrifice

Was Jesus a Vegetarian?
A survey of the main issues surrounding this problem

Strange New Gospels
Do the modern gospels given to us by Notovitch, Ouseley, and Szekeley offer any solid historical information?

The Ebionites
Basic information on the Ebionites.

Wikipedia on the Ebionites
My comments on the Wikipedia article (the version as of August 17, 2006) on the Ebionites.  

The Jesus Seminar Meets the Ebionites
The Ebionites were not a legalistic conservative group; they ditched most of Leviticus, for starters.  

Literature on the Ebionites
Others have written on Jewish Christianity as well, and here's a guide

Why are the Recognitions and Homilies Important?
"Frequently Asked Questions" about the Recognitions and Homilies

Selected biblical passages of interest to vegetarians
A quick list of bible citations of interest on vegetarianism