Sweet potato soup is a Chinese

Chinese cuisine

Chinese cuisine is any of several styles originating in the regions of China, some of which have become highly popular in other parts of the world – from Asia to the Americas, Australia, Western Europe and Southern Africa...

 dessert found in Southern China

Northern and southern China

Northern China and southern China are two approximate regions within China. The exact boundary between these two regions has never been precisely defined...

 and Hong Kong

Hong Kong

Hong Kong is one of two Special Administrative Regions of the People's Republic of China , the other being Macau. A city-state situated on China's south coast and enclosed by the Pearl River Delta and South China Sea, it is renowned for its expansive skyline and deep natural harbour...

.

Cantonese cuisine

In Cantonese cuisine

Cantonese cuisine

Cantonese cuisine comes from Guangdong Province in southern China and is one of 8 superdivisions of Chinese cuisine. Its prominence outside China is due to the great numbers of early emigrants from Guangdong. Cantonese chefs are highly sought after throughout the country...

, it is categorized as a tong sui

Tong Sui

Tong sui, also known as tim tong, is a collective term for any sweet, warm soup or custard served as a dessert at the end of a meal in Cantonese cuisine. Tong sui are a Cantonese specialty and are rarely found in other regional cuisines of China...

 or sweet soup, hence the Chinese name. The soup is usually thin in texture, but potent in taste. The recipe is simple, consisting of boiling the sweet potato

Sweet potato

The sweet potato is a dicotyledonous plant that belongs to the family Convolvulaceae. Its large, starchy, sweet-tasting, tuberous roots are an important root vegetable. The young leaves and shoots are sometimes eaten as greens. Of the approximately 50 genera and more than 1,000 species of...

 for a long time with rock candy

Rock candy

Rock candy is a type of confectionery mineral composed of relatively large sugar crystals. This candy is formed by allowing a supersaturated solution of sugar and water to crystallize onto a surface suitable for crystal nucleation, such as a string or stick...

and ginger. Sweet potato is one of the most commonly found and abundant vegetables grown in China. With its simple recipe and large crop supply, sweet potato soup is one of the most accessible and affordable tong sui in the region.