Brownies with sour milk

Preparation steps

• _ * If you don't have sour milk at home, and you don't have time to wait for it to sour, you can make it yourself in 5 minutes. You don't believe it? Try it! Mix 1 teaspoon of lemon juice in 1 dl of milk and stir. Wait 5 minutes and here’s your sour milk. I didn’t believe it until I tried it and I really got sour milk! Do this immediately, before you start stirring to stand for those 5 minutes, so you don't have to wait afterwards._
• Brownies:
• In a bowl, mix the flour, sugar, salt and baking soda.
• Put water, butter and cocoa in a medium-sized pot, then heat on the fire until it boils. Then remove from the heat and mix with a mixer (as hot as possible) into the dry ingredients (flour and other).
• Mix with a mixer until everything is combined.
• Add the eggs, sour milk and vanilla sugar, then mix again until you get a uniform mixture.
• Pour this mixture into a sheet lined with baking paper, size 22 × 33 cm (that's how much is my sheet).
• Bake for about 25 minutes in an oven preheated to 180 ° C. Try a dry toothpick to see if it's done: if the toothpick comes out dry when you prick the dough, it means that it is baked, if it is wet, ie it has a mixture on it, bake a little more.
• Dressing:
• In a small saucepan, place the butter, cocoa and 3 tablespoons of sour milk on the fire to melt everything. When it boils, remove from the heat and transfer to a medium-sized plastic container.
• Slowly add powdered sugar, vanilla sugar and 3 tablespoons of liquid whipped cream while mixing with a mixer until everything turns into a thick cream.
• Coat the cake with this cream. If your cream is too thick to apply, heat it a little more, either on the fire or in the microwave (like me, for 15 sec.). It will be much easier to spread it on the cake.
• Cool the entire cake on a wire rack, without removing it from the tin.