Hamburger

Ingredients

• 700g beef brisket, ground (single grind, but I prefer double grind)
• 1 teaspoon salt
• 1 teaspoon freshly ground black pepper
• 1 teaspoon mustard
• 1 teaspoon molasses (optional but recommended)
• 3-3 1/2 cups flour (add gradually) (200ml)
• 1 tea glass warm water (100ml)
• 1 tea glass warm milk
• Half a tea glass vegetable oil
• 1 tablespoon yogurt
• Half a packet fresh yeast
• 1 tablespoon sugar
• 1 egg white (yolk for topping)
• 1 heaping tablespoon soft butter
• Sesame seeds
• 3 tablespoons mayonnaise
• 1 1/2 tablespoons ketchup
• 1 tablespoon mustard
• 1 teaspoon apple cider vinegar
• 1 small pickle, finely diced
• Salt, pepper
• 3 onions
• 4-5 tablespoons olive oil
• 1 teaspoon sugar
• 1 tablespoon vinegar
• Salt