http://www.mediafire.com/file/3i9mll88sytlz8x/Veggies.7z/file
i’ve spent a short bit digging into the jsons for my own personal edits (making a profession that starts with my RL every day carry.) and i believe i know enough to throw together a mod for your issue… the link above should do it. download, un-7zip, drop “veggies” folder in your data/mods folder in cataclysm directory, add mod to your world, and you should see three new woods soup recipes… normal, canned, jarred… all unable to use meat (only egg), and without the “flesh” tag
i didnt test it, and i dont know if that “flesh” tag is even what the trait used to identify meats, but it should be what you need, i’d think
being personally the complete opposite of meat intolerant (my diet consists almost solely of meats.) its not something i’d use, and the meat intolerant trait is also something i’d not use… but as practice, and because it might help someone out, i threw it together for you. let me know if it doesnt work