I did find a story about sumalak at orexca.com:
A long time ago there was a woman who had two sons. There names were Hasan and Husan. Because she was a widow, and very poor, they had very little to eat, and her sons always cried from hunger. One day their mother became very weary of their crying, and sorrowful that she had nothing to give them to eat.
That evening, after they had gone to bed, she asked her neighbor for some wheat, then she took a pot from the cuphoard in which she placed 7 stones, poured water over the stones and stirred in the flour. Her sons heard the sounds, and thought their mother was cooking something delicious to eat. Reassured that they would soon have a good meal, they became quiet, closed their eyes and fell asleep. A little later their mother also slept. When she woke up in the early hours of the morning, she saw 30 angels standing around the pot. She rubbed her eyes, and when she opened them again, she saw them licking their fingers.In her delight, she woke up her sons. In their excitement they ran to the pot and found it filled with a most succulent porridge. From that time forth the boys were never hungry. The name of the meal was called Sumalak which, the Uzbek people say, means 30 angels.