For space passengers, the food is not just a means of erasing the hunger, but a major source of health and energy. However, the need for the absence of gravity in the space, food and spice to eat and spice is very different. People often think: Everything in the space swims in the air, how do the space passengers give salt and spice?
In the space, especially in the environment like international space station (ISS), the Gurity power is zero. This means that solid and liquids float in the air.
If a space passenger sprinkles salt in the normal way, the salin grains can fly around the room or around the food. Not only affects the taste of the food but also the risk for devices or electronic systems.
Space agencies have found a solution to this problem. The most common way is to seale salt into small packets or puch ones. Then it is poured directly by clicking on food. This process prevents salt from swimming in the air.
NASA and other space agencies have developed salt that comes in small, controlled grains. They are called space-compatible because it easily merge without flying.
Food sent to space are often already salt and spices. This makes a lot of need to insert the need for mass passengers separately.
Strams or tubes are used for liquid substances or souces. Sometimes, salt is stored in similar small boxes and is mixed in food.
In the absence of gravity, if the salt swims, it may accumulate on other surfaces other than food. This is the risk of damage to the equipment and complicates cleaning.