Storing Pistachio Cake:
The cake itself keeps well, but once the white chocolate ganache is added, the ganache’s storage instructions apply.
How long does pistachio cake keep?
The cake can be stored outside the refrigerator for up to five days. With the ganache on top, however, the cake must be stored in the refrigerator. Wrap the cake well and store it in an airtight container. This is especially important in the refrigerator, as the cake will otherwise dry out.
Can you freeze pistachio cake?
It can be stored in the freezer for up to three months if placed in an airtight container.