Sponge cake is delicate. Like a ballerina made of sugar. The fridge dries it out fast.
For a plain sponge, wrap it twice. Once in plastic, then in foil. That’s a double protection against air.
You can freeze it instead! Freeze it for up to a month. It thaws perfectly on the counter.
The Deep Freeze Secret
Freezing a cake overnight is actually better than refrigerating. Quick science: ice crystals stay small. They lock in moisture.
Wrap your cake in plastic, then foil. Pop it in the freezer. The next day, let it thaw still wrapped for a few hours.
No one will know it was frozen. You’ll look like a cake genius. You are.
