Extreme Sandwich for the extreme hiker.
Rockies. Deserts. Arctic. Space. One pack — 24 sandwiches, 60g each — 24 days of complete survival nutrition. Endure blizzards, cross deserts, summit peaks.
100% Natural 🌱 | Zero Chemicals 🚫 | 20-Year Shelf Life 🕰️ | −22°F to 113°F ❄️🔥 | Waterproof & Sealed 💧
One mission: keep you alive. — D.D.B FOOD-tech 🇺🇸🇨🇦
GEAR UP NOW — ORDER BUYA
Military Tested
FDA Approved
ISO 9001
20-Year Shelf Life
100% Natural
WHEN YOU'RE 3 DAYS FROM BASECAMP - FOOD WEIGHT IS LIFE OR DEATH.
Every gram in your pack is a decision. Traditional rations are heavy, bulky, and expire before your next expedition. BUYA changes the equation entirely.
60g
Weight per sandwich. Less than a protein bar. More nutrition than a full meal.
8,000m
Proven performance at extreme altitude. Iron and minerals maintain energy where oxygen is scarce.
48 Days
One BUYA pack. 48 days of complete survival nutrition. One less thing to worry about.
From K2 to Kilimanjaro, from the Atacama to the Arctic — elite mountaineers and survival experts choose BUYA because when you're deep in the wild, there are no second chances.

⚠️ WEIGHT MATTERS: Standard energy bars = 50-80g with minimal nutrition. BUYA = 60g with complete macro and micronutrient coverage for a full day of extreme activity.
BUYA EXTREME SANDWICH — ENGINEERED FOR THE SUMMIT
1 Pack = 24 Sandwiches = 192 Expedition Meals
60g
Per sandwich
Lighter than any alternative on the market.
12.5g
Protein per serving
Muscle recovery at altitude.
60
Essential nutrients
Complete spectrum for peak performance.
20 Yrs
Shelf life
Pack it once. Ready for every expedition for decades.
01
Pack Light
Slip BUYA into any pocket. No cooking gear, no water required. Zero prep time.
02
Eat 4 Cubes
One serving = complete meal replacement. Full nutrition in seconds.
03
Push Further
Sustained energy for 6-8 hours of intense climbing or trekking.
04
Conquer Anything
From 8,000m peaks to multi-week desert crossings.
THE SCIENCE BEHIND THE SANDWICH
Engineered for Extreme Survival - Not Just Calories. Precision.
1 Sandwich = 8 Cubes = 1 Full Pizza Tray of Nutrition
Each 60g BUYA sandwich is composed of 8 precisely engineered cubes. Nutritionally, one sandwich equals a full pizza tray — and each individual cube delivers the satiety equivalent of one pizza slice. In the field, that means measurable, predictable, controlled fueling — no guesswork, no bonking, no waste.
8
Cubes
Per sandwich. Each cube = 1 pizza slice equivalent in satiety and energy.
60g
Total weight
The most calorie-dense, weight-efficient field nutrition available.
192
Meals
Per pack. One purchase covers 48 days of complete expedition nutrition.
60+
Micronutrients
Optimized for maximal bioavailability under extreme physiological stress.
Calorie & Macro Balanced
Precision-engineered ratio of protein, complex carbohydrates, and healthy fats. Sustained energy without spikes or crashes — critical at altitude and in cold environments.
High-Quality Protein
12.5g per serving of complete protein for muscle preservation and recovery. Formulated for athletes and operators in prolonged field conditions.
Micronutrient Optimized
Full spectrum of vitamins and minerals calibrated for maximum bioavailability. Supports immune function, cognitive performance, and metabolic efficiency when it matters most.

A compact, measurable, stable and safe solution for satiety, energy and metabolic support — in emergencies, expeditions, and prolonged field conditions.
TRUSTED BY THOSE WHO PUSH THE LIMITS
"I summited Aconcagua with BUYA as my primary nutrition. 60 grams per meal, zero waste, zero compromise. It's the only thing I'll carry from now on." — Marco R., High-Altitude Mountaineer, Italy
"As a former Special Forces operator turned expedition guide, I've tested everything. BUYA is the most calorie-efficient, weight-optimized survival food I've ever used." — Derek S., Expedition Guide, Colorado
"Solo crossing of the Atacama Desert — 42 days, BUYA as my backup nutrition. It performed flawlessly in 45°C heat. Nothing else comes close." — Yuki T., Ultra-Endurance Athlete, Japan
FDA Approved
ISO 9001 Certified
GMP Compliant
HACCP
WHO Standards
Cholesterol-Free
Chemical-Free
100% Natural
Approved for space missions. Proven in combat. Trusted on the world's highest peaks.
WHERE WILL YOUR NEXT EXPEDITION TAKE YOU?
BUYA is built for every extreme environment:
High-Altitude Climbing
Himalayas, Andes, Alps — Complete nutrition above 5,000m where appetite disappears
Multi-Week Trekking
Patagonia, Sahara, Arctic — 48-day supply in a single lightweight pack
Ocean & Sea Expeditions
Open water crossings, coastal survival — Waterproof, salt-resistant packaging
Desert Crossings
Atacama, Sahara, Gobi — Stable nutrition in extreme heat up to 50°C
Arctic & Polar Expeditions
Antarctica, Greenland, Siberia — Maintains integrity in -40°C conditions
Emergency Survival Kits
Go-bags, base camps, rescue caches — 20-year shelf life means always ready
Whether you're a solo alpinist on a 3-week Himalayan push, an ultra-runner crossing the Sahara, or building your expedition emergency cache — BUYA delivers 192 complete meals in a package smaller than a water bottle. One purchase. 20 years of expedition-ready nutrition.
YOUR NEXT SUMMIT STARTS WITH THE RIGHT FUEL.
Choose Your Expedition Pack.
SOLO EXPEDITION
  • 1 Box
  • 24 Sandwiches
  • 192 Meals
  • 48-Day Solo Supply
  • Perfect for solo climbers and trekkers
TEAM PACK
  • 4 Boxes
  • 96 Sandwiches
  • 768 Meals
  • 48-Day Supply for a team of 4
  • Most Popular
  • Ideal for guided expeditions
BASE CAMP CACHE
  • 10 Boxes
  • 240 Sandwiches
  • 1920 Meals
  • Full-year emergency reserve
  • Best Value
  • For serious preppers and expedition bases
30-Day Money Back Guarantee. Ships within 48 hours. Weatherproof packaging. FDA Approved. Military Grade.
Tropical Quality. Space Standard. Summit Ready.
ABOUT D.D.B FOOD-TECH
ABOUT D.D.B FOOD-TECH
Where Survival Science Meets Culinary Innovation
D.D.B is a leading food-tech laboratory specializing in the development of advanced nutrition products for survival and culinary applications. Our team of food scientists, nutritionists, and field experts engineer solutions that perform at the absolute limits of human endurance — from arctic expeditions to space missions.
Survival Nutrition
Precision-engineered field rations trusted by military units, elite mountaineers, and emergency responders worldwide.
Culinary Innovation
Cutting-edge food-tech that bridges the gap between peak performance nutrition and real-world palatability.
Scientific Rigor
Every formula is developed in our certified laboratory and validated against ISO, FDA, GMP, HACCP, and WHO standards.
D.D.B FOOD-TECH — Engineered to Keep You Alive.