Drinking straw

A drinking straw is a tube for transferring a beverage from its container to the mouth of the drinker. A thin tube of plastic (such as polypropylene and polystyrene) or other material, straight or with an angle-adjustable bellows segment, it is used by being held with one end in the mouth and another end in the drink. Muscular action (a combination of the muscles of the Tongue and Cheeks) reduces air pressure in the mouth and above the liquid in the straw, whereupon atmospheric pressure forces the beverage through the straw.

The first known straws were made by the Sumerians, and were used for drinking beer, probably to avoid the solid byproducts of fermentation that sink to the bottom. The oldest drinking straw in existence, found in a Sumerian tomb dated 3,000 B.C.E., was a gold tube inlaid with the precious blue stone lapis lazuli.Argentines and their neighbors used a similar metallic device called a bombilla, that acts as both a straw and sieve for drinking mate tea for hundreds of years.

In the 1800s, the rye grass straw came into fashion because it was cheap and soft, but it had an unfortunate tendency to turn to mush in liquid. To address these shortcomings, Marvin C. Stone patented the modern drinking straw, made of paper, in 1888. He came upon the idea while drinking a mint julep on a hot day in Washington, D.C.; the taste of the rye was mixing with the drink and giving it a grassy taste, which he found unsatisfactory. He wound paper around a pencil to make a thin tube, slid out the pencil from one end, and applied glue between the strips. He later refined it by building a machine that would coat the outside of the paper with wax to hold it together, so the glue wouldn't dissolve in bourbon.

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