I just called the 1-800 number from my big bottle of Hunts Ketsup and the recording says to refrigerate after opening and use within 6 month. The actual bottle says, "no preservatives, no artificial flavors" but no where does it state to refrigerate after opening. Hmmm.

I just checked my 1 gal jug of Franks Hot Sauce (from SamsClub) and the label doesn't say anything about refrigerating after opening. My DH just told me that when he was in the Army (back in the early 70's) the hot sauce was always on the tables and never went in the fridge.

I only put bread in the fridge when I buy from the bakery-deli at the grocery store because it doesn't last without molding otherwise.