According to checking the official website of Lower Kitchen, you need to put 125 grams of southern ginger for every 10 pounds of beef bones, 5×125=625, so you need to put 625 grams of southern ginger for 50 pounds of beef bone soup in Chaoshan.

Nan ginger, also known as reed ginger, is a plant in the ginger family. The skin of southern ginger is white in color and slightly reddish at the ginger buds, which can be used in large quantities as seasoning, spice, medicinal wine and insect repellent.