Cut potatoes into small pieces about 5mm in size
Boil 15mim in boiling water, the water is not too much, probably not over the potato on the line, it is not enough to add a little, the water boiled out of the soup is not thick, the last little water is ok.
Chop the tomato
Put in a nonstick skillet and stir into a sauce
Pour the potatoes into the pot and cook for another 10 minutes.
At this time the potato is very soft, baby if chewing ability is not good can also be fed before the first pressure with a spoon on the potato mud.
Before eating you can put a little sesame oil or olive oil, olive oil remember not high temperature frying, will destroy the nutrition, directly pour a little in the soup or mix egg yolk to eat is a good choice.