Riesling can grow in a warm place, but the wine is not delicate enough, tropical fruit has a strong aroma and low acidity, so it does not have the potential to become a first-class white wine.
Red grape varieties require Mediterranean climate, which is warm and rainy in winter and dry and rainy in summer, so it is not suitable for planting high-quality riesling. Most of the grape producing areas are located in the dimension of 40 degrees north and south latitude, which is still overheated for Riesling. The high latitude of German grape-producing areas is a natural advantage, and the pursuit of brewing technology by Germans will naturally produce the best Riesling.
Finally, Alsace, the most famous white wine producing area in France, was adjacent to Germany before the German-speaking area belonged to Germany. Therefore, Alsace white wine is deeply influenced by Germany, and the bottle type used in Alsace white wine is also consistent with Germany.
In the list of the most expensive wines in the world, Bordeaux wines can hardly be seen in the top ten, except Burgundy, which is Riesling of Germany.