Have you ever opened a salt shaker and noticed a few grains of uncooked rice inside? It may look unusual, but there is a simple reason for this old-fashioned kitchen trick. Rice has traditionally been added to salt shakers to help deal with moisture, which can cause salt to become damp, sticky, and difficult to pour.

Salt naturally attracts moisture from the air, especially in humid environments. When moisture enters a salt shaker, the individual grains can stick together and form hard clumps. A small amount of dry, uncooked rice may help by absorbing some of that moisture and keeping the salt somewhat freer flowing.

The rice also serves a practical purpose inside the shaker. Its grains are generally larger than the small openings in many salt shakers, so they usually remain inside rather than being poured onto your food. As the shaker is moved, the rice can tumble through the salt and may help break up small clumps.

However, rice is not a powerful moisture absorber, so it should not be considered a guaranteed solution in very humid conditions. If your salt regularly becomes hard or damp, keeping the shaker tightly closed and storing it somewhere dry can be more effective. A clean, dry container also helps prevent moisture from becoming a recurring problem.

So, if you spot a few grains of rice inside a salt shaker, there may be more to it than meets the eye. It is a simple, inexpensive trick that has been used in kitchens for generations. While it may not solve every clumping problem, it can be a useful little habit when moisture is making your salt difficult to use.