If your fresh garlic still has long green stems, this is the best condition.
Do not wash: Never wash with water. You can gently pat or brush off any dirt with your hands or a soft brush.

The health benefits of garlic mainly stem from its sulfur-containing compounds, especially allicin.

The most important factor to look for is the quality of the skin. It should be firm and taught. Wrinkled skin on ginger means it's probably dried out and old. The skin should be easy enough to peel with your thumbnail. The ginger you're picking out should also be a bit firm to the touch as any soft spots indicate poor quality or that it's been sitting around too long. 

Regarding the market share, China accounts for about 35% share of the global fresh ginger trade. India follows with roughly 22%, while other exporters such as Nigeria, Thailand, and Indonesia account for single-digit shares.

Suitable Regions: Areas with relatively cold winters but stable soil freezing periods. This is the mainstream planting method in most parts of China (such as Shandong, Henan, Jiangsu, and Hebei).