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Smoke Points and your favorite oils
Jen loves walking in the house exclaiming, "the house is smoky, Mark must be cooking". Ok, I admit it. I get distracted. But the real problem is that I sometimes let the heat under my pan get out of hand. Here is some helpful information to keep the smoke level down in your kitchen.
The 'smoking point' or 'smoke point' of any fat is the temperature where the heated fat begins to breakdown and degrade. That smoking action is followed by an acrid smell and almost instantly imparts an unpleasant bitter flavor to the oil. If you catch your hot pan before it smokes more than a few seconds, you will probably be just fine, AND, you do want to catch it beause the oil smokes just before it catches fire...so not only will your food taste bad but you could be doomed to do some repainting if you let it go too far.
Once your oil or fat sits at its smoke point for more than a few seconds it is time to start over. You could probably get away with using the oil in question, but in the long run, you will taste your decision so why chance it?
Selecting oils for your purpose
Unrefined oils are the first step in the process when the product is pressed to extract oils and then minimally filtered to remove any suspended particles like dirt or fibers from the oil. Think cloudy fresh olive oil. Refined oils are the next step where oils have had finer particles and 'impurities' filtered out. For the most part, you will find that you enjoy a lot more flavor and nutrients from unrefined oils. For instance, the rich & peppery flavors you experience from unrefined virgin or extra virgin olive oil will be obviously lacking in refined or pomace oils. The obvious drawback to an unrefined oils is the low smoke point ( due to the impurities ) when compared to a refined oil of the same source.
The secret of using oils is simple: high smoke points for frying and sautéing, low smoke points for flavoring. So, Canola oil would be the best choice for a moderate to high heat sauté or stir fry and save your Artisan Olive Oil for flavoring at the end and for lower temperate, shorter cooking. If I am sauteeing tender spring veggies or veggies that have been blanched, and know a quick low heat saute will do the trick, I do use my good olive oil. I always keep in mind how hot and how long the dish must cook when deciding which oil to use.
Did you know you can blend your own? If you add a little butter or virgin olive oil to canola oil, you will have a high temperature oil with a touch of flavor. You will also see the same thing on your market shelves such as the ones labeled as a olive/canola blend. Although these prepackaged oils are convenient, I would recommend just mixing your own since you have no idea what quality of flavoring oil was used in the blend.
Since it's not likely you will find smoke points on the label, here is a quick reference list of oils that are most common in the kitchen:|
Fat |
Quality |
Smoke Point |
|
|
Almond oil |
420°F |
216°C |
|
|
Avocado oil |
520°F |
271°C |
|
|
Butter |
350°F |
177°C |
|
|
Canola oil |
Refined |
470°F |
240°C |
|
Coconut oil |
Unrefined |
350°F |
177°C |
|
|
Refined |
450°F |
232°C |
|
Corn oil |
Unrefined |
320°F |
160°C |
|
|
Refined |
450°F |
232°C |
|
Flax seed oil |
Unrefined |
225°F |
107°C |
|
Ghee (Indian Clarified Butter) |
485°F |
252°C |
|
|
Grapeseed oil |
420°F |
216°C |
|
|
Hazelnut oil |
430°F |
221°C |
|
|
Hemp oil |
330°F |
165°C |
|
|
Lard |
370°F |
182°C |
|
|
Olive oil |
Extra virgin |
375°F |
191°C |
|
|
Virgin |
420°F |
216°C |
|
|
Pomace |
460°F |
238°C |
|
|
Extra light |
468°F |
242°C |
|
Palm oil |
Difractionated |
455°F |
235°C |
|
Peanut oil |
Unrefined |
320°F |
160°C |
|
|
Refined |
450°F |
232°C |
|
Safflower oil |
Unrefined |
225°F |
107°C |
|
|
Semirefined |
320°F |
160°C |
|
|
Refined |
510°F |
266°C |
|
Sesame oil |
Unrefined |
350°F |
177°C |
|
|
Semirefined |
450°F |
232°C |
|
Soybean oil |
Unrefined |
320°F |
160°C |
|
|
Semirefined |
350°F |
177°C |
|
|
Refined |
450°F |
232°C |
|
Sunflower oil |
Unrefined |
225°F |
107°C |
|
|
Semirefined |
450°F |
232°C |
|
|
Refined |
450°F |
232°C |
|
Vegetable shortening |
360°F |
182°C |
|
|
Walnut oil |
Unrefined |
320°F |
160°C |
|
|
Semirefined |
400°F |
204°C |
This list is based on a much more detailed list you can find at Wikipedia.org/wiki/Smoke_point. You may also be interested in the following web resources:
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