Happy 200th Birthday to the can! In the early 19th century, Frenchman Nicholas Appert discovered a revolutionary way to preserve foods by using boiling water to force out air in glass bottles, and sealing the contents. Soon his method was adapted with tin cans, and on August 25, 1810 Peter Durand received the first patent for the pantry staple. We eat the contents of 85 cans of food a year and don't even know it. These are the 20 weirdest canned foods we could find -- we only hope that none of these find their way into our dinner.