Hong Kong

While Hong Kong is a multi-cultural city serving many cuisines, I will focus on local Cantonese food specifically. Although peanuts is not a staple of Cantonese cuisine, it is present in certain dishes. Chinese usually like to cook with peanut oil, although most restaurants nowadays will use canola/vegetable oil due to the expensive price of peanut oil. It is best to check whether or not they do or not, but having lived in Hong Kong for over 20 years, I have never encountered peanut oil in cooking. Peanuts are also frequently boiled in soups (hard to catch) and present in dishes that utilise satay sauce. As a foreigner, it may be hard to tell the difference between Cantonese and other Chinese cuisines so it is best to ask as Chinese cuisines further up North do use more peanuts in their cooking.

The Cantonese word for peanuts is fa sung or in Mandarin, fa sheng
