Put the beetroot slices in a saucepan, pour in 1 tablespoon of water, cover with a lid. Put the saucepan on the stove, turn on the medium heat.
When the arrow of the thermal controller reaches the green field, reduce the heat to a minimum and cook for 5 minutes.
Then remove the saucepan from the stove and leave for another 3-5 minutes, then remove the beets and cool.