Pastela (Layered Beef, Potato, and Egg Casserole)

Ingredients

• 1 gram saffron threads (roughly 1 tablespoon)
• 3 ½ cups boiling water
• 3 pounds ground beef
• 1 onion, coarsely chopped
• 1 cup lightly packed parsley leaves
• 1 teaspoon nutmeg
• 1 ¼ teaspoon mace
• 1 tablespoon salt
• 1 teaspoon pepper
• 1 tablespoon vegetable oil
• 1 cup red wine vinegar
• ¾ cup fresh squeezed lemon juice
• 15 medium red and yellow potatoes, peeled
• 6 large eggs
• 6 large eggs, hard boiled, cut in half lengthwise