Olive oil is nearly as massive a subject as wine, especially in Spain, which is, by far, the largest producer of olive oil in the world, with hundreds of different varieties of olives in cultivation. So choosing the best olive oil can be complicated.
Luckily Ana's uncle Rafael is an expert on the subject. An agricultural engineer recently retired after decades of work with Spain's Department of Agriculture, he has spent much of his life working with olives, olive oil, and the people who produce it. He's also a native of Córdoba, home to some of the best olive oils in the world.
During Ana's recent visit to Spain, Rafael was kind enough to help us with this post. Here are some of his tips on choosing Spanish olive oils.
First of all, choosing the best olive oil is, of course, a matter of taste. The most important thing is to try different varieties and see which you like best.
While exploring, however, it helps to keep the following points in mind.
1. Each variety of olive (picual, hojiblanca, etc.) has its own special flavor. The picual olive, for example, can produce a spicy, peppery oil, while hojiblanca makes an oil valued for its delicacy and is best used in preparations where a subtly flavored oil is best, such as Spanish-style mayonnaise.
2. The climate and soils will also determine flavor, much as terroir does with wine. In other words, picual olives grown in Jaén will produce quite a different oil from picual grown in, say, Málaga.
3. Just as older grape vines can produce a finer wine, older olive trees can produce a finer oil.
4. Finally, how and when the olives are pressed makes a great difference in the quality of the oil produced. In Spain, extra virgin means oil that comes from the first pressing.
Extra virgin oils are generally the best choice when the oil is to be consumed raw (in salads, gazpacho, dipping bread, etc.). Olive oil not labeled virgin is more refined, less flavorful, and best for cooking, though there is some debate on this subject.
If your local stores don't carry a good selection of Spanish extra virgin olive oils, check out La Tienda's olive oil page.
Rafael has two all-time favorite olive oils. He doesn't name brands, but examples of both types are sold by La Tienda. The first is picual from the Sierra Mágina in Jaén

His other favorite (I don't believe he listed these in order of preference) is extra virgin olive oil from Baena in his native Córdoba
Though each is distinct, both of these oils are full flavored, intense, and peppery--so much so that they make an outstanding salad dressing on their own. In my post on A Simple Spanish Salad, I raved about a salad Rafael served to us years ago that was nothing but baby romaine, a little coarse salt, and the best olive oil I've ever had in my life, which was an extra virgin from a tiny press in Baena. These oils are special and best used in such simple raw preparations that allow for the full appreciation of their complex flavors.
Rafael says that Carbonell, a large producer based in Córdoba, has good general purpose olive oils. Many U.S. supermarkets carry Carbonell products. La Tienda also sells both Carbonell extra virgin
and regular Carbonell for cooking and frying.
We use mainly Carbonell oils here in Central Florida and find them superior to any others sold in our supermarkets.
Finally, keep in mind that Spaniards tend to use a wide, wide range of olive oils, with different styles serving different purposes and different tastes. For example, Andrés, my father-in-law, always believed that pulpo a la Gallega (Galician-style octopus) is best dressed with strong, fruity olive oil. But you probably wouldn't want to use such an oil for almond soup (ajo blanco). A mild flavored olive oil would best.