For “Iriska” cream, of course, you can go to the store, buy a cooked cream and not bother. But this is not in Odessa cooking style. Cooking is a process and requires love for it and time, and a real Odessa’s Mummy will definitely cook condensed milk herself. And she will also make sure that the jar, while the condensed milk is being cooked, is completely covered with water, otherwise it may explode and it will add work in the kitchen.