These ketchup packets are so old they inflated : r/mildlyinteresting
How Long Does Ketchup Last? - Does It Go Bad?
Amazon.com : Heinz Tomato Ketchup, 0.95-Ounce Single Serve Packages (Pack of 50) - 3x More Ketchup Than The Standard .32oz Packets : Grocery & Gourmet Food
When to Throw Out Condiment Packets - How Long Do Ketchup and Soy Sauce Packets Last
How Long Can You Leave Ketchup Packets In Your Glove Box?
I just ate a bunch of expired ketchup: am I already dead? | NeoGAF