The food expiry tooltips show the expiration date getting further and further away, and the time to expiration increasing over time. The food seems to actually expire at about the right time.

The issue seems to be related to FoodCapability#getRemainingTime() (which has a nonsense javadoc comment) and IFood#addTooltipInfo(). I tried to fix it myself, but couldn't because the calendar code is quite hard to understand.