Cooking Without Power

Stored food only helps if you can apply heat to it. During a grid-down event, your cooking chain has three links: a heat source, a fuel supply, and a safety plan. Break any one of those links and meals stop. This page teaches you to build all three, method by method, so you can feed your household through an outage that lasts a weekend or six months.

This is a Tier 1 Procedural page. Every section is written so a first-time user can execute the procedure without returning to ask a question.

The layered cooking system

No single off-grid method is reliable in every condition. Weather kills solar ovens; fuel runs out for camp stoves; wet wood stalls rocket stoves. A robust system stacks three methods:

Layer	Method	When it serves you
Primary	Camp stove or butane cooker	Daily cooking, speed, precise heat
Secondary	Rocket stove or wood stove	Extended outages, larger batches
Tertiary	Solar oven or open fire	Low-fuel fallback, supplemental heat

Plan before the outage. Every household that cooks for 14+ days without power should own at least two methods and know how to use both.

Method 1 — Camp stove (propane or butane)

What it is

A camp stove runs on pressurized fuel canisters or a refillable propane cylinder. It lights instantly, adjusts heat like a home burner, and works in the same pots you already own. It is the fastest, most controllable option.

Fuel math

A 1 lb (454 g) isobutane/propane canister lasts approximately 1 hour on high heat or 2–3 hours on medium/simmer for a single-burner stove.
A 1 lb (0.45 kg) canister cooks approximately 4–6 simple meals (rice, beans, pasta) when you use a lid and simmer vs. boil.
A 20 lb (9 kg) propane cylinder provides roughly 20–25 hours of cooking time on a two-burner camp stove.

Fuel estimate for 14 days: A family of four cooking two hot meals daily on medium heat will consume approximately 6–8 one-pound canisters or half of one 20 lb (9 kg) cylinder over two weeks.

Equipment costs

Single-burner isobutane stove: affordable at most outdoor retailers
Two-burner propane camp stove (Coleman-style): affordable to moderate investment
1 lb (454 g) fuel canister: inexpensive
20 lb (9 kg) propane cylinder (empty): affordable; fill at gas stations or hardware stores

Setup procedure

Take the stove outdoors or to a ventilated space — a garage with the door open is the minimum; indoors without ventilation is never acceptable (see CO warning below).
Inspect the fuel connection and valve before attaching the canister. Never connect a damaged canister.
Open the valve one-quarter turn to test for hissing before igniting.
If using a threaded canister stove, screw the canister on clockwise until snug — do not overtighten.
Use a pot lid whenever possible. A lid reduces fuel use by 30–40% by holding heat inside the pot.
Simmer, don't boil. A rolling boil and a gentle simmer reach the same end result for most foods (rice, beans, pasta). Simmer conserves fuel; boil wastes it.
When done, turn the valve off completely and allow the burner to cool before storing.

Carbon monoxide kills silently

Propane, butane, and charcoal all produce carbon monoxide (CO) when burned. CO is colorless and odorless. Never use any fuel-burning stove, grill, or charcoal in an enclosed space — including a garage with doors closed, a tent, or a vehicle. Symptoms of CO poisoning: headache, dizziness, confusion, nausea. If you feel any of these while cooking, exit immediately. Install a CO detector (battery-powered) in any space where alternate-heat cooking happens.

Method 2 — Rocket stove

What it is

A rocket stove burns small-diameter sticks in an L-shaped combustion chamber. The design uses the chimney effect to create a hot, near-complete burn that produces far less smoke and uses roughly one-third the fuel of an open campfire for the same cooking result. A commercial metal rocket stove is affordable; a DIY version built from cinder blocks costs very little in materials.

Why it outperforms an open fire

An open fire combusts maybe 20–30% of its fuel as usable heat under a pot. A rocket stove combusts 85–90% of fuel energy. At the end of a week, this difference is the gap between a full wood pile and an empty one.

Fuel rules

Only use small-diameter wood — 1–3 inches (2.5–7.6 cm) in diameter. Larger logs don't fit the feed tube and choke the burn.
Dry hardwood produces roughly 8,000 BTU per pound (18,600 kJ/kg). Wet wood cuts output by 30–50%.
Split sticks burn better than round; bark-side up in the feed tube helps airflow.
Never use treated lumber, painted wood, or plywood in any cooking fire — they release toxic chemicals.

Setup procedure

Position the rocket stove on a non-combustible surface (concrete, bare dirt, gravel) at least 3 feet (0.9 m) from structures, dry vegetation, and fuel storage.
Load the horizontal feed tube with three or four sticks, tips pointing toward the combustion chamber.
Place crumpled paper or dry tinder inside the combustion chamber at the junction of the L.
Light tinder with a match or lighter. Flames should draw upward through the vertical chimney immediately.
Feed additional sticks one at a time as the fire burns down. Push sticks forward as they char. Do not overfill — excess fuel smothers the draw.
Set your pot directly on the stove's integrated support or on two bricks spanning the top opening. The pot should sit 1–2 inches (2.5–5 cm) above the flame opening, not blocking airflow.
Extinguish by removing fuel sticks and allowing residual wood to burn out. Never pour water into a hot rocket stove — thermal shock can crack clay or concrete models.

See Rocket Stove for building your own from bricks, concrete, or clay.

Method 3 — Dutch oven coal cooking

What it is

A cast-iron Dutch oven placed on and under charcoal briquettes functions as a field oven with controllable temperature. This technique is used for baking biscuits, cornbread, and casseroles that require consistent heat from multiple directions.

Temperature control: the coal-counting method

Each standard charcoal briquette produces approximately 25°F (14°C) of oven heat. The total number of coals determines the oven temperature; the split between top and bottom controls how heat is applied.

Formula: Oven temp ÷ 25 = total coals. Place 2/3 of coals on the lid and 1/3 on the bottom for baking.

Target temp	Total coals (12-inch / 30 cm Dutch oven)	Top coals	Bottom coals
300°F (149°C)	12	8	4
325°F (163°C)	13	9	4
350°F (177°C)	14	10	4
375°F (191°C)	15	10	5
400°F (204°C)	16	11	5
450°F (232°C)	18	12	6

A helpful shortcut: for a 12-inch (30 cm) Dutch oven, use the "diameter + 2" rule for 350°F (177°C) — your oven diameter in inches plus 2 equals total coal count.

Equipment costs

12-inch (30 cm) cast-iron Dutch oven: affordable to moderate investment
Lodge and Camp Chef are the most common brands; a pre-seasoned 12-inch model is affordable and well-regarded
20 lb (9 kg) bag of charcoal briquettes: inexpensive and cooks 4–6 full meals

Procedure

Light briquettes 15–20 minutes before cooking until they develop a white-gray ash coating. Never cook on black/unlit charcoal.
Using tongs, place the correct count of coals in a flat layer on the bottom of a fireproof surface (a metal lid, foil, or bare dirt).
Set the Dutch oven on the bottom coals.
Arrange remaining coals evenly in a ring on the lid.
Check every 20–25 minutes. Rotate the lid 1/4 turn clockwise and the oven 1/4 turn counter-clockwise each time to prevent hot spots.
Replenish coals every 45–60 minutes for long-cook items (roasts, beans). Fresh coals should be pre-lit before adding.
Use heat-resistant gloves. The lid handle and side handles reach 400°F+ (204°C+).

Field Note

Dutch oven baking produces meals that normalize difficult situations. Biscuits or cornbread from a Dutch oven on a cold morning communicate to everyone in the group that someone is in control and the situation is manageable. The psychological payoff of baked goods is disproportionate to the fuel cost — budget coals specifically for one baking session every few days during extended outages.

Method 4 — Solar oven

What it is

A solar oven (also called a solar cooker or parabolic cooker) uses reflective panels to concentrate sunlight into an insulated cooking chamber. No fuel is required. The most common box-style solar ovens reach 250–350°F (121–177°C) under direct sun; parabolic models can reach 400°F+ (204°C+).

Capabilities and limits

Effective cooking window: 10 a.m.–3 p.m. in most seasons at most latitudes; 4–6 hours for full dishes
Cooking times: approximately 2–3× longer than a conventional oven at the same nominal temperature
Requires direct sunlight — overcast days produce little or no heat
Works year-round in most of North America; winter sun angles require lid tilt adjustment
Cannot be used to rapidly boil water for sanitation (too slow for reliability); use camp stove for water treatment

What you can cook

Rice, beans, lentils (3–4 hours in a dark covered pot)
Bread and biscuits (60–90 minutes)
Pasteurized water (at 150°F / 65°C, water is safe after 6 minutes; a solar oven easily holds this for extended periods)
Dehydrated foods rehydrated in-oven
Casseroles, eggs, root vegetables

Equipment costs

Box-style solar cooker (All American Sun Oven): moderate investment
DIY cardboard-and-foil solar box cooker: inexpensive in materials, reaches 250°F (121°C)
GoSun Sport (parabolic tube cooker): moderate investment; faster heat-up, smaller capacity

Setup procedure

Position the solar oven on a flat, non-shaded surface. Remove any nearby obstructions.
Orient the reflective panels directly toward the sun, with the cooking chamber facing the sun's path.
Adjust the lid/panel angle so sunlight concentrates inside the cooking box. Many models have a sighting system — use it.
Place food in a dark-colored, lidded pot inside the oven. Dark pots absorb more solar radiation than light-colored ones; a black enamel pot outperforms a silver pot by 30–50% in solar applications.
Set a thermometer inside to verify cooking temperature before starting the timer.
Re-orient every 30–45 minutes to track the sun. An untracked solar oven loses half its cooking power in an hour.
Do not open the oven during cooking — each opening drops internal temp by 50°F (28°C) and adds 20–30 minutes of recovery time.

Method 5 — Open fire (wood)

What it is

Cooking over an open wood fire is the oldest method and requires the least equipment. It is also the least fuel-efficient and hardest to control. Use open fire as a tertiary method or when other options are unavailable.

Heat zone reading (the hand test)

Hold your open palm 4 inches (10 cm) above the cooking surface and count seconds before discomfort forces withdrawal:

Seconds	Heat level	Temp equivalent	Best for
1–2 sec	High	450–550°F (232–288°C)	Searing, quick-boil water
3–4 sec	Medium-high	375–450°F (191–232°C)	Frying, rapid simmer
5–6 sec	Medium	325–375°F (163–191°C)	Rice, beans, stew
7–8 sec	Low	250–325°F (121–163°C)	Slow cook, keep-warm

For sustained medium heat (rice, stew), build a small, hot fire with a coal bed — not large flames. Large flames deposit soot and scorch food; a deep coal bed produces steady, even heat.

Fire configuration for cooking

Direct fire: Pot rests on a grate or on rocks above flames. Fastest setup, hardest to control.
Ember bed: Spread coals flat, cook over radiant heat from embers. Best for steady simmering.
Fire trench (Dakota hole): Two connected holes in the ground — one for combustion, one for airflow. Produces hot, low-smoke fire with less visible signature. See Fire Types for full construction steps.

For fire starting techniques, see Fire Starting. For fire-specific recipes, see Outdoor Cooking.

Safety rules — non-negotiable

Ventilation always: Any combustion stove (propane, charcoal, wood) requires either outdoor use or mechanical ventilation. No exceptions.
CO detector: Keep a battery-powered carbon monoxide detector within 10 feet (3 m) of any indoor cooking area where combustion occurs even temporarily.
Fire suppression: Keep a 2.5 lb (1.1 kg) ABC dry-chemical extinguisher within reach of every cooking station, and a 5-gallon (19 L) bucket of water or dirt for open fire.
Fuel separation: Store fuel (propane, butane, charcoal, wood) at least 10 feet (3 m) from cooking stations and away from sleeping areas.
Child perimeter: Establish a 3-foot (0.9 m) no-child zone around any hot cooking surface. Mark it physically with cord or chalk if children are present.
Fuel cap: Always replace propane and butane valve caps when not in use and store canisters upright below 120°F (49°C).

Fuel efficiency tactics

These techniques apply to any heat source and can cut fuel consumption by 30–50% over a 14-day outage:

Pre-soak legumes: Soaking beans and lentils for 8–12 hours before cooking cuts cook time from 90 minutes to 25–30 minutes.
Hay-box (retained-heat) cooking: Bring food to a full boil for 2 minutes, then wrap the sealed pot in a blanket, sleeping bag, or insulated box. Retained heat continues cooking for 2–4 hours without any fuel. Rice cooks completely in 1 hour; beans in 4–6 hours.
Batch cooking: Cook once, eat twice. Doubling a pot of beans for tonight and tomorrow cuts fuel use by 40% compared to cooking two separate meals.
Lid always on: A lid reduces heat loss by 30–40% and cuts cook time significantly.
Match pot to burner: Using a small pot on a large burner wastes radiant heat around the base. Match pot diameter to burner or heat source diameter.
Pressure cooker: A stovetop pressure cooker reduces cook times by 60–70% — beans in 20 minutes, potatoes in 8 minutes — at a significant fuel savings. A quality pressure cooker is affordable to moderate investment.

14-day fuel planning worksheet

Before an outage, estimate fuel needs with this formula:

Meals per day: Family size × 2 hot meals = total meal-events per day
Fuel per meal: Camp stove ≈ 0.25 lb (113 g) canister per meal; rocket stove ≈ 3–5 lbs (1.4–2.3 kg) dry sticks per meal; charcoal Dutch oven ≈ 10 briquettes per meal
Fuel reserve: Total fuel × 1.5 (50% buffer for weather, cold starts, extended cooking)

Example (family of 4, 14 days, primary camp stove): - 4 people × 2 meals = 8 meal-events/day - 8 meals × 14 days = 112 meal-events - 112 meals × 0.25 lb canister/meal = 28 lbs (12.7 kg) of fuel - With 1.5× buffer = 42 lbs (19 kg) of fuel - That's approximately 42 one-pound canisters or two full 20 lb (9 kg) cylinders

Storing two 20 lb (9 kg) propane cylinders plus a two-burner camp stove covers this family's primary cooking for 14 days with margin.

Building your kit: cost tiers

Minimum ($30–$80)Functional ($150–$300)Resilient ($300–$600)

Single-burner butane camp stove: $20–$40
12 butane canisters (one month supply, conservative use): $36–$72
Total: under $80. Adequate for 1–2 people for 2–3 weeks.

Two-burner propane camp stove: $50–$100
Two 20 lb (9 kg) propane cylinders: $60–$100
Commercial rocket stove (metal, camp-ready): $40–$80
Total: ~$200. Covers 4 people for up to 30 days, two methods.

Two-burner propane stove + cylinders: $150
Rocket stove: $60–$80
All American Sun Oven: $250–$300
12-inch (30 cm) cast-iron Dutch oven: $60–$80
Total: ~$550. Four independent methods, six-month capability.

Practical checklist

Identify your primary, secondary, and tertiary cooking methods
Calculate 14-day fuel requirement for your household using the worksheet above
Stock calculated fuel plus 50% buffer
Install a battery-powered CO detector in or adjacent to cooking area
Acquire at minimum a 2.5 lb (1.1 kg) fire extinguisher and locate it at the cooking station
Practice haybox cooking at least once — confirm your insulation holds temp for 2+ hours
Pre-soak test: cook a batch of beans with overnight soak vs. dry; note time and fuel difference
Run a "no-grid cooking day" — cook every meal without using electric appliances

For specific recipes designed for these methods, see Pantry Meals and Outdoor Cooking. For heat-source pairing with the fire cooking skill set, see Fire Cooking.