Well, now some scientists at MIT have made the slow ketchup a thing of the past with special LiquiGlide coating for bottles that can make the ketchup flow right out. Take a look at the two videos below. First is a standard bottle. The second is the same ketchup in a LiquiGlide bottle.
This coating is something they call a structured liquid. It has features of both a liquid and a solid. It should work for a whole host of applications, but just for sauces in glass jars, the implications are pretty large. They estimate that if all sauce bottles used this treatment, they could keep a million tons of food from being thrown out every year. It sure seems like it would make it easier to get the bottles ready for recycling.
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