How to classify red wine

As we all know, red wines are divided into grades. The higher the grade, the more precious it is and the richer the taste. Generally speaking, the longer the red wine is stored, the higher its value is and the more refreshing it tastes. Moreover, since the varieties of grapes used to make red wine are different, the red wines produced are completely different, and the grade classification is also very strict. So, how are red wine grades divided?

1. According to color

If color is used as the classification standard, wine can be divided into three categories: red wine, white wine and rosé wine. This is also the most common classification method.

1. Red wine

Red wine is made by fermenting grapes with their skins on. Generally, the longer the soaking time, the darker the color. Young red wines are usually deep purple or ruby ​​red in color. As it ages, its color becomes lighter, becoming a garnet or brick red. In addition, the color of red wine is also affected by the variety it is brewed from. Some varieties are dark in color, and the wine produced will be darker in color, such as Cabernet Sauvignon and Syrah.

2. White wine

White wine can be made from both white and red grape varieties. In the process of making white wine, the grapes are pressed and the skins and seeds are removed before fermentation, which avoids the extraction of pigments and tannins from the skins. The color of white wine can be divided into varying shades of green-yellow, lemon yellow, golden yellow, amber and brown.

3. Rosé

The color of rosé wine is between red wine and white wine. It is a wine made from red grape varieties after a short period of maceration and fermentation. Similar to red wine, the longer rosé is macerated, the darker its color will become. Its colors from light to dark are cherry pink, peach pink, peony red, coral red and cherry red.

2. According to the form

The form here refers to whether the wine is bubbly, which involves whether the wine contains carbon dioxide. According to this standard, wine can be divided into still wines and sparkling wines.

Wines).

1. Still wine

This refers to wine whose carbon dioxide pressure is less than 0.05 MPa (a unit of pressure) at 20°C. Most of the wines on the market today belong to this type.

2. Sparkling wine

Sparkling wine refers to wine whose carbon dioxide pressure is greater than or equal to 0.05 MPa at 20°C. Common sparkling wines include Champagne from France, Cava from Spain, and Prosecco and Asti from Italy.

According to the size of carbon dioxide pressure, sparkling wine can be divided into high sparkling wine and low sparkling wine. The former has a carbon dioxide pressure greater than or equal to 0.35 MPa, while the latter is between 0.05 and 0.35 MPa. Generally, high-sparkling wine is more common on the market.