The process and ingredients are key to ending up with a great-tasting panettone. Start by using fresh and reliable baking ingredients. Next, make sure to follow the recipe instructions closely. Also, allow the loaves to fully prove in the pans. The top of the dough should be above the edge of the tin before baking.  Next, make sure to cool the panettone loaf upside down to prevent it from sinking down as it cools. Use a thermometer when cooking to prevent overbaking. It's ready when it has an internal temperature of 190° F.