Warning... FOODMENT....
There are two non-milk, non-soy based enteral supplements in Canada; Citrisource which does not contain fat and Citrotein which has some fat in it. Citrisource tastes like tang but 3 portions contain all the dietary vits/mins and protein for the day. If it helps, making a slush in the blender with crushed ice helps it go down. It has been hit and miss for me, mostly miss, but if it helps anyone else... the protein is egg-white based so it is pretty easy to digest. The Citrotein whips up like an orange julius with some ice in the blender. Definitely better than Ensure and others.
Most WalMart pharmacies will order them...
Good luck.