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MREs vs Freeze-Dried vs Dehydrated Foods: Guide for Hikers
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Time to read 12 min
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Time to read 12 min
Key Comparisons:
Shelf Life: Freeze-Dried (20-30 years) > Dehydrated (10-15 years) > MREs (5-7 years)
Weight: Freeze-Dried and Dehydrated foods are lightweight, while MREs are heavier.
Preparation: MREs are ready-to-eat, while Freeze-Dried and Dehydrated foods need rehydration.
Cost: Dehydrated foods are the most cost-effective, followed by Freeze-Dried meals, with MREs being the most expensive.
This guide provides detailed information to help you choose the best type of survival food based on your specific needs, whether for emergency preparedness, long-term storage, or outdoor adventures.
Table of content
Selecting the right type of food is essential for emergency preparedness, outdoor adventures, or long-term storage. This comprehensive guide delves into MREs (Meals Ready-to-Eat), freeze-dried meals, and dehydrated foods. We will examine their benefits, drawbacks, preparation methods, nutritional values, and more to help you make an informed decision. In the survival food sector, three primary options frequently emerge: MREs, freeze-dried meals, and dehydrated foods. Each option offers unique advantages and disadvantages, making them suitable for various scenarios and preferences. Whether you are a prepper, camper, hiker, or someone who values preparedness, understanding these differences is critical.
Exploring the nuances of these food types will provide you with the knowledge needed to select the best option for your specific needs, ensuring you are well-prepared for any situation.
Definition and History
Meals Ready-to-Eat, commonly known as MREs, have a rich history rooted in military needs. Developed initially for soldiers, MREs provide a convenient, portable, and nutritionally balanced food source for use in the field. They were first introduced during World War II as part of the United States Army's ration program and have since evolved significantly. The modern MRE, as we know it, was developed in the late 1970s and early 1980s to replace the outdated C-Rations and K-Rations used during earlier wars.
Components of an MRE Package
An MRE package typically includes the following components:
Entrée: The main course, which could be anything from beef stew to spaghetti with meat sauce.
Side Dishes: These might include items like crackers, cheese spread, or peanut butter.
Dessert: Options such as cookies, pound cake, or candy.
Snacks: Items like nuts, trail mix, or pretzels.
Beverage Mix: This can include instant coffee, tea, or a fruit-flavored drink.
Flameless Ration Heater (FRH): A chemical heater that can warm the food without needing an external heat source.
Accessories: Utensils, napkins, condiments, and sometimes even a tiny bottle of hot sauce.
Preparation and Consumption
One of the primary benefits of MREs is their ease of use. They can be eaten directly from the package without any preparation. However, for those who prefer a hot meal, the included FRH can heat the entrée in minutes using a small amount of water. The FRH works by initiating a chemical reaction that generates heat, effectively warming the food without the need for fire or electricity.
Shelf Life and Storage Conditions
MREs have a shelf life of about 5-7 years when stored in cool temperatures (below 70°F). However, many users report that they can last even longer under optimal conditions. It's important to store MREs in a dry, cool place to maximize their longevity. High temperatures can significantly reduce their shelf life, while cooler temperatures can extend it.
Benefits and Drawbacks of MREs
Advantages
MREs offer significant benefits, including no preparation needed, durability, a wide variety of meal options, and balanced nutrition. Their ready-to-eat nature makes them incredibly convenient for emergencies and outdoor activities. They are also designed to withstand rough handling, making them durable and reliable in various conditions.
Disadvantages
However, MREs can be less palatable compared to freshly prepared meals or freeze-dried foods. Some people find the taste and texture unappealing. Additionally, MREs are heavier than freeze-dried or dehydrated foods, which can be a drawback for activities like backpacking. They are also generally more expensive due to their comprehensive packaging and convenience.
Definition and History
Freeze-dried meals are a modern marvel of food preservation. The process involves freezing the food and then reducing the surrounding pressure to allow the frozen water in the food to sublimate directly from solid to gas. This technology was first developed during World War II for preserving blood plasma and medical supplies. It was later adapted for food preservation and became widely used by the 1960s.
Process of Freeze-Drying
Freeze-drying involves three main steps:
1. Freezing: The food is rapidly frozen to preserve its cellular structure.
2. Primary Drying (Sublimation): The food is placed under a vacuum, and the ice sublimates, turning directly from solid to gas without passing through a liquid phase.
3. Secondary Drying (Desorption): Any remaining moisture is removed by applying low heat, ensuring the food is completely dry.
Preparation and Consumption
Freeze-dried meals require rehydration before consumption. This typically involves adding boiling water and waiting for about 10-15 minutes. Once rehydrated, the food regains much of its original taste, texture, and nutritional value. This makes freeze-dried meals a popular choice among campers and backpackers who prioritize lightweight, nutritious, and tasty food options.
Shelf Life and Storage Conditions
Freeze-dried meals boast an impressive shelf life of 20-30 years when stored in dry, cool conditions. This makes them an excellent choice for long-term food storage. The removal of moisture and the use of vacuum-sealed packaging significantly inhibit the growth of bacteria and mold, ensuring the food remains safe to eat for decades.
Benefits and Drawbacks of Freeze-Dried Meals
Advantages
Freeze-dried meals offer a long shelf life, lightweight portability, good taste retention, and high nutritional value. They are ideal for backpacking, camping, and emergency preparedness. The rehydration process is straightforward, and the meals are often just as flavorful and nutritious as their original state.
Disadvantages
They require water for rehydration, which may not always be readily available in certain situations. The preparation time, while not extensive, is longer than simply opening an MRE. Additionally, freeze-dried meals can be more expensive than dehydrated foods, though they are generally cheaper than MREs.
Definition and History
Dehydration is one of the oldest methods of food preservation, dating back to ancient times. It involves removing moisture from the food to inhibit the growth of bacteria, yeast, and mold. Traditional methods include sun drying and air drying, while modern methods use food dehydrators and ovens.
Process of Dehydration
Dehydration can be done using various methods such as air drying, sun drying, or using a food dehydrator. The goal is to reduce the moisture content to 10-20%, which significantly extends the shelf life. The process involves:
1. Preparation: Cleaning and cutting the food into uniform pieces.
2. Drying: Place the food in a dehydrator or oven at low temperatures (typically around 140°F) until the desired moisture level is achieved.
3. Storage: Store the dried food in airtight containers to protect it from moisture and air.
Preparation and Consumption
Dehydrated foods also require rehydration before eating. This process can be as simple as soaking in water or cooking. Some dehydrated foods, like dried fruits, can be eaten as-is, while others, like vegetables and meats, need to be rehydrated for optimal texture and flavor.
Shelf Life and Storage Conditions
Dehydrated foods typically have a shelf life of 10-15 years, depending on the method of dehydration and storage conditions. They should be stored in a dry, cool place to prevent moisture from being reabsorbed. Proper packaging, such as vacuum sealing, can also help extend their shelf life.
Benefits and Drawbacks of Dehydrated Foods
Advantages
Dehydrated foods are cost-effective, lightweight, and retain good flavor. They are easy to prepare and store, making them a versatile option for various uses, including camping, hiking, and emergency preparedness.
Disadvantages
They require water for rehydration, which can be a limitation in certain situations. Dehydrated foods have a shorter shelf life compared to freeze-dried foods and typically need cooking or soaking before consumption. Additionally, the rehydration process can take longer than that for freeze-dried meals.
Understanding the nutritional content of MREs, freeze-dried meals, and dehydrated foods is crucial for making an informed choice.
Nutrient | MREs | Freeze-Dried Meals | Dehydrated Foods |
Calories p/serv |
1250 | 600 | 500 |
Protein p/serv | 40g | 30g | 20g |
Fat p/serv | 55g | 20g | 10g |
MREs typically offer the highest calorie content per serving, making them suitable for high-energy activities or emergency situations where calorie intake is critical. Freeze-dried meals provide a good balance of calories and nutrition while being lightweight. Dehydrated foods are lower in calories and fat but can still offer substantial nutritional value, especially when combined with other food items.
Storage Conditions and Shelf Life
Proper storage conditions are crucial for maximizing the shelf life of these foods.
MREs: Best stored in cool temperatures (below 70°F). Shelf life is 5-7 years, though they can last longer if kept in optimal conditions.
Freeze-dried meals: Store in a dry, cool environment. Their shelf life is 20-30 years, making them ideal for long-term storage.
Dehydrated Foods: Also stored in a dry, cool place. Shelf life is 10-15 years, though proper packaging and storage conditions can extend their longevity.
Emergency Preparedness
MREs: MREs are excellent for immediate use without preparation. They provide a complete meal in one package and do not require any additional resources like water or cooking equipment. This makes them ideal for emergency situations where resources might be scarce.
Freeze-Dried Meals: Best for long-term storage with availability of water. Their long shelf life makes them a reliable option for stockpiling emergency food supplies. However, access to clean water is necessary for rehydration.
Dehydrated Foods: Good for long-term storage but requires water for preparation. They are versatile and can be used in various recipes, but like freeze-dried foods, they need water to be consumed.
Camping and Hiking
MREs: Convenient but heavy. MREs are ready to eat and don't require any preparation, which is a significant advantage on the trail. However, their weight can be a drawback for long-distance hikers.
Freeze-Dried Meal: Lightweight and nutritious, making them ideal for backpacking. They are easy to pack and carry, and they provide good nutrition after rehydration.
Dehydrated Foods: Lightweight and cost-effective. These foods are also easy to carry and can be rehydrated at campsites. They are a popular choice for campers and hikers who want to save on weight and cost.
Long-Term Storage
MREs: Limited by their shorter shelf life compared to freeze-dried foods. While they are durable and convenient, their shelf life is shorter, making them less ideal for very long-term storage.
Freeze-Dried Meals: Ideal due to their long shelf life and compact storage. They are perfect for stockpiling as they can last for decades under proper conditions.
Dehydrated Foods: Suitable for long-term storage but require proper conditions to maintain quality. They offer a good balance between shelf life and cost, making them a viable option for long-term storage.
MRE Brands
Popular MRE brands include military surplus, civilian options, and specialized brands such as XMRE and MRE Star. These brands offer a wide range of meals tailored to different tastes and dietary needs.
Freeze-Dried Brands
Top brands include Mountain House, Backpacker's Pantry, and Wise Company. These companies are known for their high-quality, tasty, and nutritious freeze-dried meals.
Dehydrated Brands
Augason Farms and Harmony House are well-known for their dehydrated food products. These brands offer a variety of options, from individual ingredients to complete meal kits.
Taste Comparison
User reviews and taste tests reveal that freeze-dried meals generally score higher in taste compared to MREs and dehydrated foods. MREs can be hit-or-miss, with some flavors being more popular than others. Freeze-dried meals, especially from brands like Mountain House, are often praised for retaining their original taste and texture. Dehydrated foods also maintain good flavor, particularly when rehydrated properly, but they may require additional seasoning to enhance taste.
Cost is an important factor when choosing between MREs, freeze-dried meals, and dehydrated foods.
Type of Food | Average Cost Per Meal (USD$) |
MREs | 10 |
Freeze Dried Meals | 7 |
Dehydrated Foods | 4 |
MREs are generally the most expensive due to their all-in-one packaging and convenience. Freeze-dried meals are moderately priced and offer good value for their long shelf life and nutritional content. Dehydrated foods are the most cost-effective option, making them a popular choice for those on a budget.
Special Dietary Options
Many brands offer vegetarian, vegan, gluten-free, and allergen-friendly options to cater to different dietary needs. For example, Mountain House provides a range of vegetarian freeze-dried meals, while Augason Farms offers gluten-free dehydrated food products. It is essential to check the labels and product descriptions to ensure the food meets your dietary requirements.
Equipment Needed
Freeze-Drying: Requires a home freeze-dryer, which can be expensive but is a worthwhile investment for long-term use.
Dehydration: Can be done using a food dehydrator, oven, or air drying. Dehydrators are relatively affordable and easy to use.
Basic Steps for Making at Home
1. Freeze-Drying: Freeze the food, use the freeze-dryer to remove moisture, and store in airtight containers. This method preserves the food's original flavor, texture, and nutritional value.
2. Dehydration: Slice the food thinly, place in the dehydrator or oven, and dry until the desired moisture level is achieved. Store the dried food in airtight containers to protect it from moisture and air.
Feature | MREs | Freeze Dried Meals | Dehydrated Foods |
Shelf Life | 5-7 years |
20-30 years |
10-15 years |
Storage Conditions | Cool temperatures |
Dry, cool environments |
Dry, cool environments |
Preparation Requirements | Ready to eat |
Requires rehydration |
Requires rehydration |
Weight | Heavy |
Lightweight |
Lightweight |
Cost | High |
Moderate |
Low |
Choosing between MREs, freeze-dried meals, and dehydrated foods depends on your specific needs and scenarios. MREs offer convenience with no preparation, making them ideal for immediate consumption. Freeze-dried meals, with their long shelf life and retained taste, are excellent for long-term storage and outdoor activities. Dehydrated foods provide a cost-effective, lightweight option suitable for various uses but require water and some preparation.
MREs (Meals Ready-to-Eat) are fully cooked meals that can be eaten straight from the package without any preparation. They are heavier and have a shorter shelf life (5-7 years) compared to freeze-dried and dehydrated foods. Freeze-dried meals require rehydration with water and have an impressive shelf life of 20-30 years. Dehydrated foods also need rehydration and have a shelf life of 10-15 years, but they are typically lighter and more cost-effective.
Freeze-dried meals are generally the best option for long-term storage due to their 20-30 year shelf life. They maintain their nutritional value and taste well over time, making them a reliable choice for stockpiling emergency food supplies.
Yes, many brands offer vegetarian and vegan options across all three types of foods. For example, Mountain House provides a range of vegetarian freeze-dried meals, and Augason Farms offers vegan and gluten-free dehydrated food products. It's essential to check the product labels to ensure they meet your dietary needs.
Freeze-dried meals require adding boiling water and waiting for about 10-15 minutes for rehydration. Dehydrated foods also need rehydration, which can involve soaking in water or cooking. The preparation time can vary depending on the specific food and method used.
MREs are generally the most expensive, averaging around $10 per meal due to their convenience and all-in-one packaging. Freeze-dried meals are moderately priced at about $7 per meal and offer a good balance of cost and long shelf life. Dehydrated foods are the most cost-effective, averaging $4 per meal, making them a popular choice for budget-conscious consumers.