Quick and easy chocolate cake soaked in awesome sauce, very economical and family size 😎

the ingredients:
Cake Ingredients:
2 cups all-purpose flour (300 grams)
1 cup raw cocoa powder without sugar (90 grams)
2 cups regular sugar (400 grams)
1 teaspoon salt (5 grams)
1 teaspoon baking powder (3 grams)
2 teaspoons of bicarbonate (11 grams)
Two thirds of a cup of yoghurt or milk with added vinegar (150 grams)
1/3 cup of oil (75 grams)
1/3 cup of yogurt (85 grams)
2 large eggs, at room temperature
A cup of water between warm and hot, but it does not settle the eggs, and the finger can bear it (225 grams)
2 teaspoons vanilla (optional)
Chocolate Sauce Ingredients:
A quarter cup of sugar (150 grams)
Four cups of cocoa (70 grams)
½ cup (70 g) flour
One and a half tablespoons of starch
3 cups of milk
2 tablespoons of oil
2 tablespoons (30 grams) butter
Small spoonful of vanilla
To water the cake from a cup to a cup and a half of milk