Root plant to fuel the process. In return, the plant takes nitrogen compounds produced from ammonia by the bacteria. The term root crops refers to any edible underground plant structure, but many root crops are actually stems, such as potato tubers. Edible roots include cassava, sweet potato, beet, carrot, rutabaga, turnip, parsnip, radish, yam and horseradish. Spices obtained from roots include sassafras, angelica, sarsaparilla and licorice. Sugar beet is an important source of sugar. Yam roots are a source of estrogen compounds used in birth control pills. The fish poison and insecticide rotenone is obtained from roots of "Lonchocarpus" spp. Important
Tasting room join together in cooperative arrangements within a single tasting room, often in a nearby town. Some larger wineries have special "reserve" or VIP tasting rooms for handling large parties, industry representatives, and samples of more expensive or "library" wines. In other cases tasting rooms are operated as a commercial venture by an independent party that buys wines from the wineries, often as part of a wine store. Tasting rooms are still considered an important brand-building feature in the wine business. However, they have become increasingly important as outlets for direct-to-consumer sales, particularly for small wineries that do not have extensive