Deep Frying Fundamentals
The difference between a greasy result and a crisp one comes down to heat retention and surface moisture. Respect the oil's capacity for thermal recovery and you will avoid the soggy heavy finish that ruins a good fry.
Manage your temperature windows
Your oil needs to be hot enough to crisp but not so hot that it burns the outside before the center is cooked. Keep your oil volume high enough that the temperature doesn't plummet when you drop the food in.
- Heavy-bottomed Dutch oven or cast iron pot
- Spider skimmer or metal tongs
- Instant-read probe thermometer
- Wire cooling rack over a baking sheet
What goes in.
- 2-3 quartsHigh smoke point oil (refined peanut, canola, or grapeseed)
- 2 lbsPrepared items for frying, patted completely dry
- as neededSalt, applied immediately after removal
Never crowd the pot
Adding too much food at once drops the oil temperature significantly, leading to oil absorption rather than frying. Work in small batches and wait for the thermometer to return to your target temperature between rounds.
The method.
Select your vessel and fill
Fill your pot no more than halfway with oil. Ensure there is at least three inches of space between the oil line and the rim to account for bubbling and splatter.
Target the heat
Heat the oil over medium-high heat until it reaches 350°F to 375°F. Use a thermometer; do not rely on visual cues like shimmering oil or smoke.
Submerge carefully
Lower the food away from you into the oil to avoid splash-back. If the oil bubbles violently, your food has too much surface moisture—pat it dry next time.
Monitor the color
Fry until the exterior reaches a deep amber color. Do not rely on time alone, as density varies; rely on the color of the crust and the stillness of the bubbles.
Drain and season
Remove the food to a wire rack. Salt it immediately while the residual surface oil is still hot, as the salt will adhere better to the cooling crust.
Other turns to take.
The Double Fry
For potatoes, fry at 300°F until tender but pale, drain, then finish at 375°F for the final color and crunch.
When it doesn't go to plan.
Always keep a tight-fitting lid nearby to smother a potential grease fire; never use water on an oil fire.
Filter your oil through a coffee filter or fine-mesh sieve once it has cooled to room temperature to extend its shelf life.
Discard oil if it becomes dark, thick, or develops a sour smell.
The ones that keep coming up.
How do I know when the oil is ready?
When the thermometer registers your target temperature. If you don't have one, stick the handle of a wooden spoon into the oil; if bubbles form steadily around the wood, it is generally ready for frying.
Why is my food greasy?
The oil temperature was too low. The food acted like a sponge, soaking up the oil instead of pushing it away with a steam barrier.