The invention discloses a
processing method of
instant potato porridge, which comprises the following steps: removing surface impurities from sweet potatoes, potatoes, cassava and taros with the flour yield of more than or equal to 20%, and peeling under the
steam pressure of 0.8 MPa; washing, and dicing within 30 minutes after washing to obtain potato dices; the diced potatoes are soaked in
citric acid with the concentration being 0.4%, then fixation is conducted, and the
steam temperature for fixation is not lower than 90 DEG C, so that the diced potatoes are steamed after fixation is completed for 8-12 min; the preparation method comprises the following steps: removing water, cooling to below 40 DEG C, crushing by a
colloid mill with a
sieve of more than 100 meshes to obtain mashed potatoes, crushing rice by a
sieve of 60 meshes, uniformly mixing the crushed rice with the mashed potatoes, or
drying the mashed potatoes, uniformly mixing whole potato flour and
rice flour, carrying out
extrusion molding at 115 DEG C, and carrying out normal-pressure
airflow puffing treatment at 130 DEG C for 50 seconds to obtain the potato rice. The potato porridge prepared by the method disclosed by the invention has a
meal replacement effect, can be industrially produced, is nutritional and healthy, can prevent diseases, and is rich in taste and convenient to eat.