When it comes to keeping food warm for extended periods, especially during buffets, catering events, or outdoor gatherings, Sterno cans are a reliable and efficient solution. These small, portable heat sources contain a gel fuel that burns cleanly and steadily. However, using Sterno safely and effectively requires a basic understanding of how to light it properly. Whether you’re preparing for a family party or a professional catering event, learning how to light a Sterno the right way can make a noticeable difference in safety, convenience, and the success of your food service setup.
Understanding Sterno Cans
What Is a Sterno?
A Sterno is a type of canned heat, typically made from a jellied alcohol-based fuel. It is designed for short-term use, often under chafing dishes or fondue pots. The flame produced is low and consistent, making it ideal for keeping food warm without overcooking it or creating excess smoke.
Common Uses of Sterno
- Buffet lines and catering trays
- Fondue or hot pot setups
- Emergency heating for cooking during power outages
- Backyard picnics and camping meals
Preparation Before Lighting
Choose a Safe Work Area
Before lighting a Sterno, ensure that the surrounding area is free from flammable objects, paper, fabric, or anything that could catch fire. Set up the Sterno on a heat-resistant, level surface like a metal or ceramic tray. Avoid lighting it directly on wood or plastic tables without protection.
Check Ventilation
Although Sterno burns cleanly, it should be used in a well-ventilated area to prevent any potential buildup of fumes. Outdoor use is ideal, but if used indoors, crack open a window or door to allow airflow.
Gather Necessary Tools
- Sterno can with intact lid and fuel
- Long-handled lighter or match
- Heat-resistant gloves (optional but recommended)
- Chafing dish setup or holder for the can
How to Light a Sterno
Step 1: Open the Sterno Can
Use a spoon, coin, or flathead screwdriver to carefully pry off the metal lid of the Sterno can. Keep the lid in a safe place, as it will be needed to extinguish the flame later. Do not remove the inner lining or attempt to stir the fuel.
Step 2: Position the Can Securely
Place the Sterno can under the chafing dish frame or in the appropriate holder. Make sure it’s sitting level and not tilted, as this could cause uneven burning or spillage of the fuel gel. Ensure there’s nothing obstructing the area directly above the can.
Step 3: Use a Long Lighter or Match
Using a long-reach lighter is the safest and most efficient method to light a Sterno. Carefully hold the flame near the surface of the gel fuel until it ignites. A steady blue or yellow flame should appear. If using a long match, be careful not to burn your fingers light the match and immediately bring it to the fuel surface.
Step 4: Observe the Flame
Sterno flames are often low and may be difficult to see in daylight. Gently hover your hand several inches above the can to feel the heat and ensure it’s burning. Never stick your hand too close to the flame or directly into the can.
Tips for Safe and Effective Use
- Always use the Sterno can in the container it was designed for.
- Keep out of reach of children and pets.
- Avoid touching or moving the can while it’s burning.
- Use one can per pan for uniform heat unless your chafing dish requires two.
- Check periodically to ensure the flame remains lit and the container is stable.
How to Extinguish a Sterno
Step 1: Use the Original Lid
To extinguish the flame, use the same lid that came with the Sterno can. Carefully place it back on the can to smother the flame. Do not blow out the flame or use water, as this can spread the fuel or cause splattering.
Step 2: Let the Can Cool
Allow the Sterno can to cool for at least 1520 minutes before handling or storing. The metal can retains heat and can cause burns if touched too soon after extinguishing.
Storage and Reuse
Storing Leftover Sterno
Unused Sterno can be reused if there’s fuel left in the can. After cooling, tightly reseal the can with its lid and store it in a cool, dry location away from direct sunlight or open flames. Properly stored Sterno can last for many months.
Disposal
If the can is empty, let it cool completely and then dispose of it in accordance with local regulations. Do not try to refill a used can or dispose of hot fuel in trash bins.
Safety Reminders and Common Mistakes
What to Avoid
- Never light a Sterno in an enclosed or poorly ventilated space.
- Do not use multiple cans too close to one another unless designed for it.
- Never try to refill or modify a Sterno can.
- Keep flammable objects at least 12 inches away from the flame.
First Aid
In case of accidental contact with the burning gel or a spill, use a fire extinguisher designed for flammable liquids or cover the flame with a metal object to smother it. Do not use water on Sterno fires. If someone is burned, run cool water over the burn and seek medical attention if needed.
When to Use Sterno and Alternatives
Best Situations for Sterno
Sterno is ideal for temporary heating when you don’t have access to electricity or traditional warming devices. It’s particularly useful in:
- Backyard parties
- Holiday buffets
- Camping trips
- Emergency preparedness kits
Alternative Heating Methods
If Sterno isn’t available, other options include electric warming trays, insulated food containers, or even candles designed for heating. However, few are as portable and convenient as Sterno for short-term food warming needs.
Learning how to light a Sterno safely is a simple yet valuable skill for anyone involved in food service, party hosting, or outdoor events. With just a few tools and basic precautions, you can ensure that your food remains warm, appetizing, and safe to eat. Whether you’re a professional caterer or a home cook planning a family gathering, Sterno offers a reliable way to maintain perfect food temperatures without the need for complicated equipment. Just remember to prepare carefully, follow safety guidelines, and enjoy the convenience it provides.