20 cm of baguette
2 slices good quality ham
2 slices Gouda cheese
6 rashers of smoked bacon, fried
4 slices of tomato
2 large button mushrooms, sliced and sautéed in butter
Split baguette along the middle, allowing it to hang together by the crust. Open up and smear a thin layer of mayonnaise on both slices. Top with ham, cheese, tomato slices, bacon and mushrooms. By now there is so much stuff in the sandwich that you either need sandwich paper to wrap around it to hold everything in place while you eat it, or you simply serve it as an open-faced sandwich and eat it with a knife and fork.
To turn this into a Dagwood sandwich, use 6 slices of white bread, smear one side of every slice with mayonnaise and then alternate layers of bread and toppings. Don't forget the olive on top!