Pre-Heat the Gas Oven at 180 C temperature and also grease the cake mold and keep it aside.
Beat the eggs with Sugar & Vanilla essence

Until they are of ribbon consistency, and mix using a beater at least 5-7 mins.
Add All-purpose flour into the bowl.

Mix it using a ladle stir. Stir in clock wise direction don’t stir spoon anti-clock wise.
Add the above batter to the cake mold you had set aside, tab the cake mold to release air bubbles

And bake the cake in the Gas oven for 1 Hour/60 Minutes.

Vanilla Plain Sponge Cake is ready.