LiquiGlide

This is a bottle invention by LiquiGlide. LiquiGlide created bottles made out of glass and plastic. The bottles were created to improve the flow rate of bottles so it can prevent clogs in the bottles. LiquiGlide lets the solid be added into the bottle, it traps the material, the second material added is a liquid material that creates the solid be able to slide through the bottle. The liquid material is edible, it does nothing to the solid and it does not affect the solids taste.
This is a great idea because most bottles have a problem because when you turn a bottle to the side, the solid clogs up in the bottle. For an example, a ketchup bottle has to be hit on the bottom a couple of times for it to release the solid. The problem in this design is, what if you slide the liquiglide bottle but forget that it slides so easily that you release all the solid liquid onto your plate. It can be messy, but sure the plastic container, or a cap with a little hole release liquid can help.

Sources
http://liquiglide.com/