Hamburger alla panna (Hamburger with Cream Sauce)

For the patties:

• 500 g 1 lb. ground beef (or 4 beef patties)
• 1 slice of best-quality bread better if homemade crust removed, cut into cubes, soaked in milk to cover and squeezed dry
• 1 medium onion or 2 shallots minced and sautéed in butter until soft
• 100 g grated Parmesan cheese
• 1 egg
• A handful of chopped parsley
• A scrape or two of nutmeg
• salt and pepper q.b.

For the browning and sauce:

• Olive oil and/or butter
• 1 spoonful of flour
• 1 cup of rich beef broth
• 2 cups of cream

For finishing the dish:

• A splash of sherry
• More chopped parsley