How to cook
In a bowl, sift the flour with a pinch of salt and a teaspoon of baking soda.
Mix the products very well. Line a 9″ (22 cm) baking tray with baking paper. Pour the prepared mixture into it.
Bake the cake at 360°F (180 degrees) in a preheated oven for about 35-40 minutes.
Remove the baked lean cake from the oven and while it's still warm, sprinkle it with powdered sugar. Wait for it to cool before cutting it!
Have fun making grandma's lean jam cake!