Depending on the judge assigned to the case, and his relationship with the lawyer suing you, your liability is unlimited on the one hand to zero on the other hand. I know that isn't the answer you needed, wanted, or expected, but it is the truth, the whole truth, and nothing but the truth.
In a court of law being charged with a crime is the best of all possible worlds. Being sued for damages in civil court is the worst because juries usually decide law suits based on emotion or feelings not on facts. What is OK in one judge's court room can be gross negligence in another's. It is often more about the trial lawyer getting a pay day and the food bank's customer going on a binge than it is about justice. In this case the judge may even urge you to settle out of court just to make the suit go away. No Federal laws will protect you then or pay your legal bills.
In reality the work to amass a case against a food bank will be great and their record keeping is chaotic so most lawyers will look for pastures with more green backs in the bank. Then there is that old legal adage that says, "You can't squeeze blood from a turnip."