KESAR MALAI CAKE/ SAFFRON MILK CAKE (No butter/oil & no oven dessert)

No oil no butter! No oven required Ingredients:- For cake sponge- 3 eggs separated 2-3 drops lemon juice 1 cup powdered sugar 1 tsp Rose essence 3/4 tsp Cardamom crushed 1 cup Plain flour 1 tsp Baking powder For Saffron milk- 1 cup fresh cream (if you don't have, use ghar ki malai blend with some milk & seive it) 1/2 cup Condensed milk 1.5 cups Milk 2 pinch Saffron soaked in warm milk 1 tsp rose essence Powered sugar to taste Nuts for garnishing