In one sentence, describe what the following article is about:

While you can always try harvesting the truffles yourself, you might have an easier time finding them online or at a farmers' market. Because you need a specially trained female hog to harvest them, truffles can get very expensive. For best flavor, buy truffles that were harvested during the winter. They won't be the same as fresh truffles, but they will be much easier to find. You can find them online as well as in gourmet food stores. Some farmers' markets may also carry them. The most famous black truffle is the Black Périgord truffle, originating from France. It grows near oak and hazelnut trees and is harvested during autumn or winter. It is suitable for all sorts of dishes. Other types of black truffles include:  Burgundy truffle: best for vegetable-based dishes. Chinese truffle: has a delicate flavor and fragrance. Garlic truffle: has a garlic-y fragrance. The Pecan truffle grows in the southern United States. As its name implies, it can be found near pecan trees. It is one of the most expensive truffles at $100 per pound (454 g). Here are some other types of white truffles:  Hungarian dessert truffle: sweet and ideal for dessert and ice cream Italian white truffle: rich fragrance and flavor with hints of garlic, shallots, and mushroom.

Summary:
Buy fresh truffles online or in farmers' markets. Consider dried or brined truffles. Choose black truffles if you want a rich flavor. Choose white truffles if you want a more delicate flavor.