Sieve Besan, cocoa powder,salt baking powder and baking soda. Keep it aside

In a bowl, whisk sugar, eggs, vanilla extract and oil well

Add milk and whisk well

Add dark chocolate and whisk well

Gradually add dry ingredients and whisk until well combined. Pour batter into prepared cake tin

Allow to cool for 30 minutes. Demould and cool on wire rack completely

Serve cake as is or prepare chocolate glaze. For chocolate glaze, mix butter, sugar, chocolate and water until well combined.for thick glaze add more sugar, for thin glaze, add more water