Black Forest Cake (Eggless and it can be prepared without an oven)

My mother makes these awesome cakes she learnt in a class, I am yet to make it myself, on our 9th month wedding anniversary she made it for us!
Ingredients (For the base sponge cake)
100gms Maida
25 Gms (1/4 cup) Cocoa Powder
½ tspn. Soda Bicarbonate
1 tspn. Baking powder
60 Gms butter (1/4 cup)
200 Gms condensed milk
100 ml soda water (1/2 cup)
1 tbspn. Ground sugar
1 tspn. Vanilla essence (powder or liquid)
Method (For the base sponge cake)
1. Sieve flour (Maida), cocoa, baking powder, and soda & keep aside.
2. Beat butter, condensed milk & sugar for about 10 mins.
3. Add soda water & dry ingredients alternately
4. Pour the butter into a greased, dusted & bottom lined cake tin.
5. Bake to 180 degrees for 25- 30 mins approximately. (If you don’t have an oven, you may preheat a tava on the flame place your cake on it and cover it with a plate, place something heavy on your plate so that pressure is not leaked out.)
Ingredients (Filling & Topping)
1 tin Frozen cherries
2 cups Rich cream

Method (Filling & Topping
1. Beat the rich cream for about 8 to 10 mins. (you may check it by holding the container of cream upside down, the cream shouldn’t drop down)
2. Slice the cake horizontally.
3. Soak the bottom layer with the canned cherry water & rum syrup.
4. Put a layer of cream on the cake.
5. Cover it with cherries and another layer of cream.
6. Sandwich with the other piece of cake and soak with the same syrup.
7. Cover the top layer with cream with cream and decorate it with chocolate curls and cherries.