History of Bordeaux wine became the base for Richard's French operations. As the popularity of Bordeaux wine increased, the vineyards expanded to accommodate the demands from abroad. Henry and Aliénor youngest son, John was in favor of promoting the wine industry, and to increase it further, abolished the "Grande Coutume" export tax to England from the Aquitaine region. In the 13th and 14th century, a code of business practices called the "police des vins" emerged to give Bordeaux wine a distinct trade advantage over its neighboring regions. The citizenry of Bordeaux worked diligently to promote and foster their relationship with the English market. In
Ahr (wine region) to be classified as dry ("trocken") Auslese, but nowadays they are either called Grosses Gewächs or are classified as plain Qualitätswein bestimmter Anbaugebiete and are sold under estate-specific wine names. The best red wines of Ahr are quite expensive, and are routinely priced significantly higher than Germany's top dry Rieslings. Prices in excess of 50 euro are not uncommon for the top of the range at more well-known producers, although cheaper entry wines also are produced. Due to the limited production, and the high domestic demand for red wines in Germany, Ahr wines have only limited international (export) availability. Ahr