Grease an 8-inch cake pan. Preheat the oven to 350 degrees F.
In a bowl, add flour, cocoa powder, coffee powder, baking soda, salt, and mix. Keep this aside.
1 ½ cups All purpose flour or Maida, ¼ cup Cocoa powder, ½ teaspoon Instant coffee powder, 1 teaspoon Baking soda, ½ teaspoon Salt
In another bowl, add sugar and water and mix until sugar dissolves. To this, add oil, lemon juice, vanilla extract, and mix.
1 cup Sugar, 1 cup Water, ⅓ cup Oil, 1 tablespoon Lemon juice, 1 teaspoon Vanilla extract
Finally, add the dry ingredients to the wet ingredients, and use a whisk to mix until just combined.
Transfer the prepared batter to a greased pan and bake in the preheated oven for 30 to 35 minutes or until a toothpick inserted comes out clean.
Let this sit for 10 minutes. Then remove the cake from the pan and let it cool completely on a wire wrack. Check the video here.