The section of Borean Tundra in between Amber Ledge and Warsong Hold is home to roaming Rhino families. If you AoE just some of the members of a family, the rest of the family will aggro. So, if you are of sufficient level and have a good Area of Effect or cone attack, you can take down multiple families of rhinos in a very short time -- even if there is someone else there farming rhinos, too. The hard part then becomes making sure you've looted each corpse in a pile of enormous dead mammals. Now, if I'm out of Rhino Dogs, I just take a few minutes to go stock up and then take a dragon back to Dalaran, just because I can.
Where do you get the meat you need to make the recipes you use regularly? Perhaps you know of where large families of Shoveltusks graze? Do you have any other tips for budding chefs looking to speed up their meat farming?