"Country wine" is also a common translation of "Landwein" in the German wine classification, or "vin du pays"
Cooking wines typically contain a significant quantity of salt. It is a wine of such poor quality, that it is unpalatable by itself and intended for use only in cooking. (Note, however, that most cooking authorities advise against cooking with any wine one would find unacceptable to drink. A recent study, however, has found that inexpensive wine works as well as expensive wine in cooking.)