How to make
In a bowl, sift the flour with a pinch of salt and a teaspoon of baking soda.
Add the chopped walnuts, half a cup of oil and half a cup of sugar. Add a tea cup of water and add the jam of your choice. I used fig jam.
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!