Depends on the situation. Steaming and boiling are two different cooking methods. Steaming purple potatoes can be done in a pressure cooker, rice cooker, etc. Generally speaking, it takes 15 to 20 minutes.

And boiling purple potatoes is to clean the purple potatoes, put them into a pot, boil them over high heat, turn to medium-low heat and cook them for about 15 minutes, if the purple potatoes are uniformly sized, both take about the same amount of time, or it may be possible that the pressure cooker steams them faster, so it is recommended that you decide according to the actual situation.

To determine whether the purple potatoes are cooked, you can use chopsticks to poke, if it is easy to poke into the instructions have been cooked, otherwise you have to continue to steam.

Expanded Information:

The world's main sweetpotato-producing areas are located south of 40°N latitude. Cultivated area in Asia is the most, followed by Africa, the Americas ranked 3rd

China is the world's largest sweet potato producer, perennial sweet potato planting area of 75-8000 million mu mu is a non-statutory unit of measurement, 1 mu = 667 m 2. Accounting for China's total cultivated land area of 4.2% of the Chinese sweet potato industry accounted for the world's planting area of about 60% of the world's total output harvested 80% of the total production of about production.

Sweetpotato is widely distributed in China, with the Huaihai Plain, the Yangtze River Basin and the southeastern coastal provinces being the most populous, and the larger planting areas being in Sichuan, Henan, Shandong, Chongqing, Guangdong, Anhui and other provinces. According to the differences in climatic conditions and farming systems, the entire Chinese production is divided into five ecological zones.