Colombian Christmas Custard (Natilla Colombiana)

Ingredients (11)

• 4 cups whole milk
• 8 ounces panela, or 1 cup packed light or dark brown sugar, plus 1 tablespoon molasses
• 2 to 3 cloves
• 3 to 4 cinnamon sticks
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 3/4 cup cornstarch
• 2 tablespoons butter
• 1 cup fresh or frozen shredded coconut, optional
• 1 teaspoon vanilla
• 3/4 cup chopped nuts and/or 1/2 cup raisins, optional