Discuss reasons for the resurgence of heirloom grape varietals, using references to support your logic.
The French AOC system was created in part to codify the prevalent practice of using differences in terroir to establish regional boundaries for use by wine producers to market their products. There has been much debate over the decades since the inception of the AOC system and the enforcement of its rules by the INAO. Producers, exporters, and consumers debate the advantages and disadvantages of the rules and regulations. Many producers have argued that it has become a hindrance to their ability to produce the best wines their terroir will create.
People desire heirloom vegetables and fruits due to their superior flavor. Heirloom varieties have generally been developed due to their taste and performance. Seeds have been grown and harvested for generations in a particular region and microclimate becomes adapted to that area. Due to a particular type of soil, climate and seed a region can have unique flavors known only to plants grown in that area. While we have become a consumer-driven economy many of the unique heirloom varieties has fallen to the more uniform, more productive varieties. Other than for the unique taste and marketability of an heirloom variety there is a more important reason to save these plants. Many varieties of plants have already disappeared. It is imperative to keep plants that are resistant to environmental issues such as drought and disease.