Pour the hot milk over the cocoa! You'll be amazed! Few people know this recipe.

Pour hot milk over the cocoa powder! You'll be surprised! Few people know this recipe.
Ingredients:
360g all-purpose flour (about 3 cups)
1 pinch of salt
200g sugar (about 1 cup)
220ml hot milk (about 1 cup minus 1 tablespoon)
50g unsweetened cocoa powder (about 1/2 cup)
3 tablespoons vegetable oil (about 40g)
1 egg
1 tablespoon vanilla extract
15g baking powder (about 1 tablespoon)
150g powdered sugar
2 tablespoons lemon juice