If you are not intending to eat a cake and want to keep it as a display piece, its longevity will depend on several factors, including the ingredients used, the environment in which it is kept, and the preservation methods employed.
Typically, a decorated cake can last for several days to a week without any significant changes in its appearance. However, it's important to note that over time, the cake may dry out, lose its moisture, and become stale. The frosting and decorations may also deteriorate, lose their freshness, or even start to melt or discolor.
To maximize the lifespan of a cake as a display piece, you can consider the following preservation methods:
Refrigeration: Keeping the cake in a refrigerator can help prolong its freshness and prevent it from spoiling. Wrap it tightly with plastic wrap or store it in an airtight container to minimize exposure to air and moisture.
Freezing: If you want to preserve the cake for an extended period, freezing is an option. Place the cake in an airtight container or wrap it well in plastic wrap, then aluminum foil, and store it in the freezer. Thaw it slowly in the refrigerator when you want to display it.
Protective coverings: Using a cake cover or display case can shield the cake from dust, insects, and other contaminants, helping to maintain its appearance. Make sure the covering is large enough to avoid touching the decorations.
Avoid exposure to sunlight and humidity: Place the cake away from direct sunlight, as it can cause colors to fade or melt the frosting. Additionally, keep it in a cool and dry environment to prevent moisture absorption and mold growth.
While these preservation methods can help prolong the lifespan of a cake, it's important to remember that even with these precautions, the cake will eventually lose its freshness and visual appeal. It is advisable to check the cake regularly for any signs of spoilage or deterioration and replace it with a fresh one when needed if you want to maintain an attractive display piece.