<P> Except in the most casual dining establishments, they are usually provided as a matched set, sometimes distinguishable only by the number of holes on the top of the shaker . Designs range from small, plain glass screw cap containers (invented by John Landis Mason, inventor of the Mason jar) to more ornate works of art . Sometimes the design refers to some pair of related objects--such as a replica of a West Highland White Terrier containing salt and a Scottish Terrier containing pepper . Designs may also relate to specific occasions or holidays . As a result of this diversity of design, collecting salt and pepper shakers is a hobby . Design of salt and pepper shakers has also been used to transmit cultural perspectives about race and other cultural values . </P> <P> There are two Museums of Salt and Pepper Shakers dedicated to showing the variety and history of salt and pepper shakers through the ages . There is also a Novelty Salt & Pepper Shakers Club with members from all over the world . </P> <P> It is important that salt and pepper be in the correct shaker, especially if they are not glass, so guests will not accidentally put salt on their food when they want pepper, or vice versa . The number of holes varies by culture, health and taste . In the United States where excessive salt is considered unhealthy, salt is stored in the shaker with the fewest holes, but in parts of Europe where pepper was historically a rare spice, this is reversed . </P> <P> As an alternative to salt and pepper shakers, pepper may be distributed at the table by use of a pepper grinder, while salt may be distributed from a salt cellar or a salt mill . </P>

What is the difference between salt and pepper shakers
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