Buttercream cakes are a popular choice for birthdays, celebrations, and special events. The soft, creamy icing combined with moist sponge creates a rich and indulgent treat. But if you’re planning to serve one, you need to know how long a buttercream cake will stay fresh. The shelf life of a buttercream cake depends on several factors: storage conditions, the type of buttercream used, and any fillings or toppings. The general rule is that a buttercream cake can last anywhere between 3 and 5 days if stored correctly. However, let’s break it down to give you a clearer picture of how to keep your cake at its best.
Storage Tips for Buttercream Cakes
Proper storage is key to prolonging the freshness of your buttercream cake. If you don’t store it correctly, the buttercream can soften, the sponge can dry out, or the cake can become a breeding ground for bacteria. Here’s how to store it properly:
Room Temperature
If you’re planning to consume the cake within a day or two, room temperature storage works well. Ensure the cake is kept in a cool, dry place, away from direct sunlight or heat sources. Cover the cake with a cloche or place it in a cake box to protect it from dust and air. This also helps keep the buttercream from drying out or becoming too soft. However, room temperature storage is best for cakes without perishable fillings. For example, cakes with fresh fruit or dairy-based fillings should not be left at room temperature for extended periods. These fillings can spoil faster and need refrigeration.
Refrigeration
If your buttercream cake will be around for more than 2–3 days, refrigeration is a must. Buttercream itself can withstand refrigeration, but it can firm up, making the cake less enjoyable when served. To avoid this, remove the cake from the fridge about 30 minutes to an hour before serving. This will allow the buttercream to soften slightly and regain its smooth texture. Store the cake in an airtight container or cover it with plastic wrap to prevent it from drying out in the fridge. This also protects it from absorbing any unwanted fridge odours.
Freezing
If you need to store a buttercream cake for a longer period, freezing is an option. However, freezing can alter the texture of both the sponge and the buttercream. To freeze a buttercream cake, follow these steps:
- Freeze the cake without the topping first. This will allow the sponge to harden without the buttercream getting damaged.
- Once frozen, wrap the cake tightly in plastic wrap, then place it in a freezer-safe bag or container.
- For best results, freeze the cake for no more than 3 months. When you’re ready to serve, allow the cake to defrost in the fridge overnight before bringing it to room temperature.
Note: If the cake has decorations like fondant, they might not freeze well. It’s best to freeze the cake without the decorations and add them later.
How Long Does Buttercream Last on Its Own?
Buttercream itself is quite stable and can last up to a week in the fridge. However, it’s always a good idea to check the smell and consistency before using it on the cake. If the buttercream starts to separate, looks watery, or has a sour smell, it’s best to discard it. You can also freeze buttercream if you’ve made too much. It can last up to 3 months in the freezer. Thaw it overnight in the fridge before using, and whip it back to its original texture before applying to your cake.
How to Tell If Your Buttercream Cake Has Gone Off
The main signs that your buttercream cake is no longer fresh are:
- Dry sponge: If the cake feels hard or dry, it’s past its best.
- Soft or melted buttercream: If the buttercream becomes oily, loose, or starts to melt, the cake is no longer good.
- Off smell: If there’s a sour or strange smell, it’s time to dispose of the cake.
When to Consider a Cake Shop
For those who prefer a freshly made buttercream cake, visiting a local cake shop may be a better option. Professional bakeries have the right tools, ingredients, and expertise to ensure cakes are stored and transported properly. Plus, they’ll offer cakes with the best flavour and texture, made to order.
Final Thoughts
A buttercream cake can last between 3 and 5 days when stored properly. Room temperature storage works for short-term consumption, but refrigeration is necessary for longer storage. Freezing is possible, but it may affect the cake’s texture. By following the right steps, you can ensure your cake stays as fresh as possible and is ready to be enjoyed at its best.
