Condensed milk at home without milk powder

Boil milk 2or3times as boiled put sugar and cook on high flame and take out 2,3tbsp milk and add baking powder mix well and pour in pot and cook it will become thick and colour would change put 1/2tsp ghee and cook a for 2mints and as on the back of spoon you put your finger and line shows close the stove and keep it to come in normal temp and put in air tight container and can use 3month. It is used in Ice-cream and many other sweets.