For those of you who are in need of some ideas for post-op liquid diet tips; here are some links.
Make sure to check with your doctor first.
https://healthcare.utah.edu/ent/docs/jaw-surgery-cookbook.pdf
http://www.dinnerthroughastraw.net/index.htm
You can also try some organic puree sweet potato (93cal/ half of cup), pumpkin (41cal/ half of cup). Add some water, and some cream of wheat (110cal/3tbsp) to make it runny. May be add some maple syrup (200cal/4 tbsp).
Watered down baby foods also work very well.
I hope this helps.