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ISS food comes in three forms: natural form, rehydratable, and thermostabilized. Half of the food is provided by NASA* and the other half by Russia.Natural Form (NF) refers to food that does not need to be processedExamples: Crackers, tortillas, nuts, granola bars, condiments, candy, and cookies.Rehydratable (R) foods have had the water removed from them. Once the crew are ready to eat, hot water is injected into the pouch to restore the food to its normal form.Examples: Cottage cheese, shrimp cocktail, scrambled eggs, noodles, mashed potatoes, quiche, borsch, milk, rice, macaroni & cheese, sausage patties, teriyaki vegetables, spaghetti with meat sauce, and grits.Thermostabilized (T) foods are heated to a level sufficient to kill harmful microorganisms and enzymes and then packaged in cans, cups, or pouches.Examples: Chopped pork with eggs, beef with vegetables, split pea soup, pike perch in Baltika sauce, tofu with Hoisin sauce, minestrone soup, grilled pork chop, tomato basil soup, chicken in white sauce, African sweet potato and peanut soup, and lasagna.There are also occasionally fresh foods, such as apples, oranges, and tomatoes. There is not a food refrigerator onboard, so these items are only available immediately after the arrival of a visiting vehicle.*ESA/JAXA provide speciality foods to NASA if one of their astronauts is to fly.

ISS food comes in three forms: natural form, rehydratable, and thermostabilized. Half of the food is provided by NASA* and the other half by Russia.Example US FoodsExample Russian FoodsNatural Form (NF) refers to food that does not need to be processedExamples: Crackers, tortillas, nuts, granola bars, condiments, candy, and cookies.Rehydratable (R) foods have had the water removed from them. Once the crew are ready to eat, hot water is injected into the pouch to restore the food to its normal form.Examples: Cottage cheese, shrimp cocktail, scrambled eggs, noodles, mashed potatoes, quiche, borsch, milk, rice, macaroni & cheese, sausage patties, teriyaki vegetables, spaghetti with meat sauce, and grits.Thermostabilized (T) foods are heated to a level sufficient to kill harmful microorganisms and enzymes and then packaged in cans, cups, or pouches.Examples: Chopped pork with eggs, beef with vegetables, split pea soup, pike perch in Baltika sauce, tofu with Hoisin sauce, minestrone soup, grilled pork chop, tomato basil soup, chicken in white sauce, African sweet potato and peanut soup, and lasagna.Also, as you might notice from the top picture, there are occasionally fresh foods, such as apples, oranges, and tomatoes. There is not a food refrigerator onboard, so these items are only available immediately after the arrival of a visiting vehicle.Regular bread is not part of the normal menu aboard ISS, largely because it takes up a lot of space and produces crumbs that would float around. There are flat breads. Tortillas are especially popular for the NASA astronauts, since they live in Texas. Here's a picture of a crew member making a breakfast taco using a tortilla, rehydrated scrambled eggs and hot sauce. Hot sauce is quite popular because in weightlessness, fluids rise into the head and can cause congestion that dulls the sense of taste, much like a head cold does here on Earth.Peanut butter in tortillas is also quite popular (it also happens to be one of my favorite weekday breakfasts).The table in the Russian Service Module has a built in can warmer.On the US segment, there is a food warmer that looks like a small suitcase.And some foods are warmed simply by using hot water.*ESA/JAXA provide speciality foods to NASA if one of their astronauts is to fly.

They can. Spaghetti has long been a common meal for astronauts. It has been eaten on the Moon. Salad is more difficult, simply because it doesn’t preserve well, but it has been eaten, in space.The challenges of space food are primarily in preservation and preparation. Food needs to be densely packed into a launch vehicle, usually without refrigeration, maintain its quality and safety for months at a time, and then be easily prepared for consumption, with very limited kitchen facilities, and consumed in the microgravity environment.Early space meals were very similar to the MRE (Meals Ready to Eat) that are designed to be carried into battle, by soldiers. Over time, we’ve evolved those meals to be far more sophisticated. This is more than just a luxury, it is critical for long duration spaceflight. Food is very important to not just our physical well-being but our mental well-being.ISS food comes in three forms: natural form, rehydratable, and thermostabilized. Half of the food is provided by NASA* and the other half by Russia.Example US FoodsExample Russian FoodsNatural Form (NF) refers to food that does not need to be processedExamples: Crackers, tortillas, nuts, granola bars, condiments, candy, and cookies.Rehydratable (R) foods have had the water removed from them. Once the crew are ready to eat, hot water is injected into the pouch to restore the food to its normal form.Examples: Cottage cheese, shrimp cocktail, scrambled eggs, noodles, mashed potatoes, quiche, borsch, milk, rice, macaroni & cheese, sausage patties, teriyaki vegetables, spaghetti with meat sauce, and grits.Thermostabilized (T) foods are heated to a level sufficient to kill harmful microorganisms and enzymes and then packaged in cans, cups, or pouches.Examples: Chopped pork with eggs, beef with vegetables, split pea soup, pike perch in Baltika sauce, tofu with Hoisin sauce, minestrone soup, grilled pork chop, tomato basil soup, chicken in white sauce, African sweet potato and peanut soup, and lasagna.Also, as you might notice from the top picture, there are occasionally fresh foods, such as apples, oranges, and tomatoes. There is not a food refrigerator onboard, so these items are only available immediately after the arrival of a visiting vehicle. Lettuce isn’t a food that survives well in any of the three mentioned formats. However, onboard the ISS is an experiment, called Veggie, that has the crew grow some typical salad greens - in space. Here’s a picture of the crew enjoying some of that.Regular bread is not part of the normal menu aboard ISS, largely because it takes up a lot of space and produces crumbs that would float around. There are flat breads. Tortillas are especially popular for the NASA astronauts, since they live in Texas. Here's a picture of a crew member making a breakfast taco using a tortilla, rehydrated scrambled eggs and hot sauce. Hot sauce is quite popular because in weightlessness, fluids rise into the head and can cause congestion that dulls the sense of taste, much like a head cold does here on Earth.Peanut butter in tortillas is also quite popular (it also happens to be one of my favorite weekday breakfasts).The table in the Russian Service Module has a built in can warmer.On the US segment, there is a food warmer that looks like a small suitcase.And some foods are warmed simply by using hot water.*ESA/JAXA provide speciality foods to NASA if one of their astronauts is to fly.