Cut the leek into very fine rings and the meat sausage into cubes. Drain the corn very well.
Mix flour with baking powder, baking soda and add salt, eggs, cooking oil and buttermilk. Mix everything well. Fold in the leek rings, corn and sausage.
Grease and flour a muffin pan. Pour the dough into the mold. Bake at 180 degrees for about 30 minutes.
Let the muffins cool down in the mold for 10 minutes, then remove them from the mold and let them cool on the wire rack. These muffins taste cold and warm. Meat sausage can be replaced with cheese cubes.