Can Mountain House freeze-dried meals be prepared with cold water instead of boiling water? 

I tested five Mountain House dinners to find out how long they actually take to rehydrate, how they taste cold, and whether some meals work better than others.

This can matter after an earthquake or extended power outage when you may have drinking water but no convenient way to boil it. Cold soaking can also be useful for camping and backpacking if you want to avoid carrying a stove and fuel.

For most of this test, I used room-temperature water. I also prepared one meal with ice-cooled water to see how much colder water affected the rehydration time and taste.

Cold-Soaking Mountain House Meals: The Results

The biggest surprise was how much the rehydration time varied from meal to meal. My main takeaway: Mountain House meals can work without boiling water, but you need to allow considerably more time than you would with hot water. With room-temperature water, around 30–40 minutes worked surprisingly well for several of the meals I tested. Other meals took much longer.

Chicken Tikka Masala

I started with Mountain House Chicken Tikka Masala, using room-temperature water.

At 21 minutes, it clearly wasn’t ready. The meal was still watery and crunchy.

By 36 minutes, however, it was getting close to fully rehydrated and already tasted good enough to eat.

I let it continue to soak until 50 minutes. The extra time produced only a small improvement, so I would consider that additional soaking optional.

Result: Good flavor with a noticeable spicy kick. In this test, roughly 35–40 minutes was enough to make it enjoyable.

Beef Stroganoff With Noodles

The Beef Stroganoff was easily the slowest meal in the test.

At 29 minutes, it was still watery, and the meat was noticeably crunchy.

At 62 minutes, it was almost completely rehydrated and edible, but I found the flavor somewhat bland. It also left a mild unpleasant aftertaste that lasted for more than an hour.

I continued the test until 95 minutes, when it was fully rehydrated. However, the additional 33 minutes made only a very small improvement.

Result: It eventually worked with cold water, but it took far longer than the other meals and was my least favorite of the five.  

Chicken Fajita Bowl

The Chicken Fajita Bowl performed much better.

Using room-temperature water, it looked fully rehydrated at about 33 minutes.

More importantly, it tasted great, with a pleasantly spicy flavor.

Result: One of the better choices from this test if you need to prepare a freeze-dried dinner without hot water.

Fettuccine Alfredo With Chicken

I expected the Fettuccine Alfredo with Chicken to perform poorly because of its creamy sauce. Instead, it was the biggest surprise of the test.

At 21 minutes, the meal was still slightly watery and the chicken remained a little crunchy.

But at 34 minutes, the texture had improved dramatically. It tasted creamy and delicious.

Result: My favorite meal overall. It showed that even a creamy pasta meal can work surprisingly well with room-temperature water.

What Happens If the Water Is Really Cold?

Room-temperature water is one thing, but what if you’re preparing emergency food during cold weather or with cold water such as from a mountain stream?

To find out, I cooled water with ice for 25 minutes before adding it to the Kung Pao Chicken.

The difference was noticeable.

At 22 minutes, the meal still had a long way to go.

At 30 minutes, it still wasn’t ready.

I continued soaking it, and at 55 minutes it was essentially rehydrated except for two pieces of meat.

The flavor was still good and had a noticeable spicy kick, but eating the meal colder reduced my enjoyment of it. I rated the flavor about half a star lower because of the temperature.

Result: Very cold water works, but expect considerably longer rehydration times and somewhat less enjoyable flavor.

How Long Should You Cold Soak Mountain House Meals?

Based on these tests, I would not assume that every Mountain House meal will be ready after the same amount of time.

As a practical starting point:

• Room-temperature water: Allow roughly 30–40 minutes for many meals.
• Meals with slower-rehydrating ingredients: They may need an hour.
• Very cold water or cold weather: Plan on closer to an hour and check the meat and other larger pieces carefully before eating.

Rather than relying only on a timer, check the texture. If pieces of meat, rice, noodles, or vegetables are still dry or crunchy, give the meal more time.

Is Cold Soaking Worth It for Emergency Food?

For emergency preparedness, I still prefer having a way to heat water. A hot meal can be especially welcome during an extended power outage or other stressful situation.

But this test showed that even if you lose the ability to boil water, freeze-dried meals can still be enjoyable and perfectly edible with clean room-temperature or even cold water, as long as you give them enough time. 

That makes cold soaking a useful backup option for:

• Earthquakes
• Extended power outages
• Emergency food storage
• Camping
• Backpacking
• Situations where fuel needs to be conserved

The key is patience. A meal that normally takes only minutes with boiling water may need 30 minutes, an hour, or occasionally longer when prepared cold.

My Favorites

Of the five meals in this test:

Best Overall: Fettuccine Alfredo with Chicken
At about 34 minutes, it was creamy, delicious, and my favorite of the test.

Another Excellent Choice: Chicken Fajita Bowl
It was essentially ready at about 33 minutes and tasted great.

Good: Chicken Tikka Masala
It was enjoyable by around 36 minutes, with only a small improvement from soaking longer.

Good but Slower When Very Cold: Kung Pao Chicken
It tasted good but needed close to an hour with ice-cold water.

Least Favorite: Beef Stroganoff
It required substantially more soaking time and had the weakest flavor of the meals I tested.

The Bottom Line

Yes, you can prepare Mountain House freeze-dried meals with cold water.

In my test, several dinners tasted good after about 30–40 minutes in room-temperature water. But results varied considerably by meal, and very cold water slowed the process even more.

For emergency preparedness, I wouldn’t rely on a single cold-soak time for every freeze-dried meal. Test the meals you plan to store—or at minimum, be prepared to give them extra time.

And if you want to see other emergency foods that require no cooking at all, watch my separate taste test of eight long-lasting no-cook emergency foods video.