Savory Panettone Recipe

Ingredients

• 2 eggs
• 1 1/2 teaspoons salt
• 1/2 cup lukewarm milk
• 2 1/2 tablespoons lukewarm milk, or more as needed
• 1/2 ounce compressed fresh yeast
• 1 teaspoon white sugar
• 2 cups Italian-style tipo 00 flour
• 2 cups strong bread flour
• 1/4 cup lukewarm water
• 6 tablespoons butter, at room temperature
• 1 (3 ounce) can tuna, drained
• 3 tablespoons mayonnaise
• 1/4 cup sliced black olives
• 2 tablespoons extra-virgin olive oil
• 2 anchovy fillets
• 1 tablespoon capers
• 2 ounces cubed ham
• 3 tablespoons cream cheese
• 3/4 cup cooked shrimp
• 4 lettuce leaves
• 4 slices mozzarella cheese
• 3 slices prosciutto, or more to taste