Spinach with ham tubes and "soldiers"

Rinse spinach several times in a large amount of water. Put in a saucepan without adding water, cover and bring to a boil. Once the spinach begins to settle, stir it with a wooden spoon. Cook over a low heat for 5 minutes, then roll back in a colander to make the glass liquid, and very finely chop. Cut the crusts from the slices of bread and cut the slices lengthwise into 4 parts. Peel the onion, cut into rings and fry in oil until brown. Remove the onions, fry the prepared strips of bread from 2 sides in the same oil (they are called "soldiers"). Combine spinach with fried onions and salt, sprinkle with flour and mix. Put the mixture with spinach on each slice of ham, roll the ham with a tube. In a heat-resistant dish, heat the oil, put the tubes and put in the oven for 10 minutes. You can put boiled rice or mashed potatoes together with the tubes. Before serving, transfer the tubes to the table by the "soldiers. "