sudden lodge
Upon shift-clicking food (this case it's grain) into a feeding trough's container, I can duplicate grains 1:2, so long as it is not a full stack of grain.
The same applies to any food type (sandwiches are demonstrated).
This was tested with Ewes and Rams nearby, if of any relevance.
Currently on most recent version of TFG Modern (0.11.7).
sacred gale