Shijing said:
Mrs. Peel said:
Should I go back to using oilve oil to cook my food with for a while and lay off the bacon? I never used to eat it very often before.
I'm pretty sure that olive oil is supposed to be used "cold" only, since it breaks down in the wrong ways when heated -- my understanding is that grapeseed oil is a better substitute (I use my recycled bacon grease for cooking most of the time, but I have a bottle of grapeseed oil on hand that I use occasionally).
Here's the smoke point of different oils :
from http://en.wikipedia.org/wiki/Smoke_point
The smoke point generally refers to the temperature at which a cooking fat or oil begins to break down to glycerol and free fatty acids. The glycerol is then further broken down to acrolein which is a component of the bluish smoke. It is the presence of the acrolein that causes the smoke to be extremely irritating to the eyes and throat. The smoke point also marks the beginning of both flavor and nutritional degradation. Therefore, it is a key consideration when selecting a fat for frying, with the smoke point of the specific oil dictating its maximum usable temperature and therefore its possible applications. For instance, since deep frying is a very high temperature process, it requires a fat with a high smoke point.
Considerably above the temperature of the smoke point is the flash point, the point at which the vapors from the oil can first ignite when mixed with air.
Fat Quality Smoke Point
Almond oil 420°F 216°C
Avocado oil 520°F 271°C
Butter 350°F 177°C
Canola oil Expeller Press 464°F 240°C
Canola oil High Oleic 475°F 246°C
Canola oil Refined 470°F 240°C
Coconut oil Unrefined 350°F 177°C
Coconut oil Refined 450°F 232°C
Corn oil Unrefined 320°F 160°C
Corn oil Refined 450°F 232°C
Cottonseed oil 420°F 216°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 188°C
Macadamia oil 413°F 210°C
Olive oil Extra virgin 375°F 191°C
Olive oil Virgin 420°F 216°C
Olive oil Pomace 460°F 238°C
Olive oil Extra light 468°F 242°C
Olive oil, high quality (low acidity) Extra virgin 405°F 207°C Palm oil Difractionated 455°F 235°C[1]
Peanut oil Unrefined 320°F 160°C
Peanut oil Refined 450°F 232°C
Rice bran oil 490°F 254°C
Safflower oil Unrefined 225°F 107°C
Safflower oil Semirefined 320°F 160°C
Safflower oil Refined 510°F 266°C
Sesame oil Unrefined 350°F 177°C
Sesame oil Semirefined 450°F 232°C
Soybean oil Unrefined 320°F 160°C
Soybean oil Semirefined 350°F 177°C
Soybean oil Refined 450°F 232°C
Sunflower oil Unrefined 225°F 107°C
Sunflower oil Semirefined 450°F 232°C
Sunflower oil, high oleic Unrefined 320°F 160°C
Sunflower oil Refined 450°F 232°C
Tea seed oil 485°F 252°C
Vegetable shortening 360°F 182°C
Walnut oil Unrefined 320°F 160°C
Walnut oil Semirefined 400°F 204°C