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Step 1
Understand the different grades of olive oils. There are 4 traditionally sold in United States markets, although some high-end shops might carry even more. Extra-virgin olive oil comes from the first press of the olives and is considered the highest-quality olive oil. Virgin olive oil also comes from the first pressing of the olives, but it has a higher acidity level. Plain olive oil is a combination of virgin olive oil and synthetically manufactured cooking oil, and it's what you'll get if you buy olive oil in bulk. Finally, there's extra-light olive oil, which has practically no color or flavor.
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Step 2
Consider how you want to use olive oil in your kitchen. If you don't care much about the intensity of flavor and are using olive oil as a substitute for vegetable oil, virgin olive oil--or even extra-light olive oil--is fine. If, however, you want an olive oil with a rich, fruity flavor, choose extra-virgin.
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Step 3
Choose a store that offers a wide variety of olive oils and does a brisk olive-oil business. Olive oils lose their vibrant flavor as they sit on the shelf, so you want to buy your oil from a store that is constantly replenishing its stock.
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Step 4
Look for smaller bottles of olive oil. Unless you cook with olive oil every day, it will take you a while to deplete a big bottle. You want your olive oil to remain as fresh as possible, so purchase it in fairly small quantities.
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Step 5
Participate in an olive-oil tasting class. Many upscale grocers and gourmet food shops offer tastes of their olive oils, free of charge. Educate yourself about the different kinds of olive oil--and learn which ones you personally enjoy--before you buy a whole bottle.














Comments
Kyle10jeep said
on 8/5/2008 Sound advice. If you can only buy supermarket oil, try Colavita. If you are a little more dedicated to your cooking, try Sanso.