// Verse.Thing.ctor
public int stackCount = 1;
(..)
// Verse.Thing.ExposeData()
Scribe_Values.LookValue<int>(ref this.stackCount, "stackCount", 0, true);
Since this is set to 1 by default one could change that to:
Scribe_Values.LookValue<int>(ref this.stackCount, "stackCount", 1, true);
This was a redundancy of 83 occurences on a fresh colony due to pawns in other factions carrying single meals.
This is actually intended to make it consistent so all stackable things have stackCount defined. Thanks, locking.