How does freeze dried food work?

Cooked food has its water removed so it stores dry; add water and wait, longer if the water is not hot.

How many calories are in freeze dried emergency food?

Check the package total; Mountain House lists 6,140 calories for its 24-serving Classic Bucket.

Do I need extra water for freeze dried food?

Yes; the Classic Bucket needs 18 cups and Mountain House's 30-Day kit about 7.5 gallons.

Freeze-dried food: count calories and water, not servings

By the Plain Prepper editors. Updated 2026-10-15.

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Quick answer

Freeze-dried meals are cooked food with the water removed, so they store for years and rehydrate with water in minutes. Compare calories, not servings: Mountain House says its 24-serving Classic Bucket holds 6,140 calories, about 256 per serving. Plan the water too; that bucket needs 18 cups to prepare. Mountain House says its meals can be made with cold or room-temperature water, and that its No. 10 cans have a 30-year shelf life from the manufacture date.

Servings are not meals: compare calories

Servings are small: Mountain House lists a No. 10 can serving as 1 1/2 cups of dry mix that makes 1 cup prepared.
Do the division: 6,140 calories in the Classic Bucket divided by 24 servings is about 256 calories per serving, or about 512 per two-serving pouch.
Kit math: Mountain House says its 30-Day Emergency Food Supply Kit provides about 1,732 calories per day for one person, from 90 pouches.
Check your household: choose foods your family will eat and remember special dietary needs, as Ready.gov advises.

When comparing any brand, ask for total calories in the package; a high serving count can hide a small amount of food.

Plan the water before you buy

Package	Water to prepare, per Mountain House
Classic Assortment Bucket, 24 servings	18 cups total
30-Day Emergency Food Supply Kit, 90 pouches	About 117 cups (7.5 gallons)

That water is on top of drinking water. Ready.gov's food page favors staples that do not require water or special preparation for exactly this reason, so pair freeze-dried meals with some ready-to-eat food and see our water storage containers guide.

Hot or cold: Mountain House says hot water is preferred, and with room-temperature water you double the wait time.
Cooking outdoors: if you heat water on a camp stove, Ready.gov says camp stoves and charcoal grills are for outdoor use only.

Pouches, buckets or No. 10 cans

Pouches: add water to the bowl-shaped pouch and eat from it, Mountain House says; good for go-bags and camping.
Buckets: the Classic Bucket packs 12 pouches in a stackable bucket at 5.52 lb and 12 x 10 x 12.31 inches.
No. 10 cans: loose food, no pouches inside; Mountain House says you can make the whole can or scoop out individual servings. Once opened, the remaining food no longer has its sealed shelf life, so plan to use it.
Big kits: the 30-Day kit ships as two 15-day boxes, 33.85 lb in total.

Shelf life claims, read carefully

Mountain House backs its meals with a 30-Year Taste Guarantee and says its cans carry a 30-year shelf life from the manufacture date. That is the maker's claim for sealed packages. Write the purchase date on each bucket or can, store it somewhere cool and dry off the floor, and rotate the oldest stock into camping trips or meals so the supply stays familiar. For why freeze-drying keeps longer than dehydrating, see our freeze dried vs dehydrated guide.

Special diets and allergies

Read each pouch: Mountain House marks some meals gluten-free, such as the Beef Stew and Chicken Fried Rice in the Classic Bucket, while others in the same bucket contain noodles and milk.
Mixed buckets mean mixed ingredients: a household with one allergy may do better buying single recipes it can check than a variety bucket.
Infants and special needs: Ready.gov lists food for infants and reminds you to plan for special dietary needs; freeze-dried adult meals do not cover those.
Comfort matters: Ready.gov also lists comfort and stress foods. A familiar breakfast like granola with milk and blueberries, included in the Classic Bucket, can help a stressful week.

Building a mixed emergency food supply

Start with no-cook food Ready.gov lists: ready-to-eat canned meats and fruit with a manual can opener, protein bars, granola, peanut butter and dried fruit.
Add freeze-dried meals for longer outages and hot meals, sized by calories.
Store the water for rehydrating alongside drinking water.
Add a way to heat water outdoors and a long spoon.

For fruit, see our freeze dried fruit guide; for ready-to-eat meals with heaters, see our MRE guide.

What to look for when you buy

Mixed meals in one bucket: Mountain House Classic Assortment Bucket

Best for: A first freeze-dried supply of familiar breakfasts and dinners

Mountain House lists 24 servings in 12 pouches, 6,140 calories in total, 18 cups of water to prepare all of it, a stackable bucket at 5.52 lb and a 30-Year Taste Guarantee.

Watch out: Amazon groups several Mountain House buckets in one listing; pick the Classic, 24 servings. About 256 calories per serving.

See options on Amazon (opens Amazon in a new tab)

Bulk single meal: Mountain House Beef Stroganoff No. 10 Can

Best for: Families who will serve several portions at once

Mountain House lists 10 servings of 1 cup prepared, loose food you can scoop by the serving, a 30-year shelf life from manufacture and preparation with hot or room-temperature water.

Watch out: Once opened, use it up; a can of one recipe gets repetitive in a long outage.