Prepare a batter from the ingredients margarine to baking powder. Bake in a well-greased loaf pan (30 cm) at 170 ° C on the bottom rack for 60 - 65 minutes.
Let the cake cool down a little in the mold, remove it from the mold as soon as possible, pierce it several times with a knitting needle and soak it with a sprinkling of lemon juice and powdered sugar. The hotter the cake is when it is soaked, the better.