Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: igourmet Manchego DOP (7.5 ounce)
Product description: Manchego is Spain's most famous cheese. Produced in La Mancha in Central Spain, true Manchego is made from 100% sheep's milk. Cheeses from Spain are commonly made from sheep's milk because most of the territory is rocky and dry-- unfriendly to cows but suitable for raising goats and sheep. The abundance of wild herbs on Central Spain's grazing lands gives Manchego a special taste and aroma. Its flavor is zesty and exuberant, while its texture is firm, but not dry. Manchego can be recognized by the zigzag pattern etched into its rind. This is created by the rippled surface of the press used in the production of the cheese. Underneath the inedible rind, the interior is ivory-colored with few small holes. Taste Manchego for the first time and you will be surprised at how long the wonderful flavor lingers on your palate. It is an experience you will be drawn back to again and again., Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
Product price: $14.95
Product brand: igourmet
Target attributes: Variety
Answer: attribute: variety
value: manchego
source: product description
attribute: variety
value: manchego
source: product title