Orange Cake Filling

The filling can be prepared up to 4 hours ahead and refrigerated in an airtight container. Stir gently before using, as some liquid may separate. Do not make more than 4 hours ahead, as the raw egg white and fresh citrus have limited food safety windows and the filling will become watery with extended storage.

Once assembled with cake, store covered at room temperature for up to 8 hours or refrigerate for up to 2 days. The filling contains raw egg white, so refrigeration is recommended for food safety. Note that refrigeration will firm the cake; bring to room temperature 30 minutes before serving for best texture. The filling will gradually release moisture into the cake layers over time.