Smoke usually means the oil is too hot or dirty.
- Cool the oil, clean the fryer, and replace the oil if needed.
- Prevent smoking by using high-smoke-point oil and keeping temperatures moderate.
- If smoke persists, the fryer may be faulty and should be replaced.
Why does a deep fryer smoke?
Smoke from a deep fryer usually means the oil is too hot. Most oils smoke between 350°F and 450°F. When oil exceeds its smoke point, it breaks down and releases smoke. Food debris in the oil also burns and creates smoke. Water in the food or oil can cause sputtering and smoke. Old or reused oil has a lower smoke point. A faulty thermostat can overheat the oil. Some fryers have a manufacturing residue that burns off on first use.
How to stop a deep fryer from smoking right now
First, unplug the fryer or turn it off. Let the oil cool completely. Do not add cold oil to hot oil. Once cool, remove the oil and strain it through a fine mesh. Wipe the interior with a paper towel. Clean the heating element with a soft brush. Check for any food particles stuck in the basket. If the oil looks dark or smells rancid, replace it. Reassemble the fryer and test with fresh oil at a lower temperature.
How to prevent deep fryer smoking in the future
Use an oil with a high smoke point, like peanut or canola. Keep the oil temperature below 375°F. Use a thermometer to verify the fryer's thermostat. Filter the oil after each use. Store the oil in a cool, dark place. Replace the oil after 8 to 10 uses. Dry food thoroughly before frying. Do not overfill the basket. Clean the fryer regularly, especially the heating element.
When to replace your deep fryer or call a professional
If smoke continues after cleaning and fresh oil, the thermostat may be faulty. A faulty thermostat can cause overheating and a fire risk. If the power cord is damaged, replace the fryer. If the fryer trips the circuit breaker, stop using it. If you see rust or corrosion inside, replace the unit. For gas fryers, call a professional if you smell gas. Otherwise, contact the manufacturer for repair options.