Place clams in a bowl and cover with water. Add flour and stir to distribute. Let soak for at least 5 minutes for the clams to release the accumulated sand in their shells.
Rinse clams until water comes out clean.
In a large sauce pan, place steamer basket on the bottom, and add stout. Bring to boil. Carefully add clams and cover and cook for 5 minutes.
Serve with melted butter for dipping.
Recipe by Farmhouse 1820 at https://farmhouse1820.com/steamed-clams/