Cake ships frozen with dry ice, which may have evaporated during shipment. This is normal. Please take care not to touch any remaining dry ice with bare hands.
Upon receipt, remove boxed cake from shipping container and store in freezer for up to 6 months. Alternatively, remove plastic wrap from cake and store in box in refrigerator for up to 7 days or at room temperature for up to 2 days.

Cake is best enjoyed at room temperature.
If frozen, remove plastic from cake and place bakery box in refrigerator to thaw overnight.
Remove from refrigerator approx. 2 hours before serving to allow cake to come to room temperature.
To serve, run large knife under hot water and dry with towel before each slice.
Store leftover cake in airtight container in freezer for up to 6 months, in refrigerator for up to 7 days or at room temperature for up to 2 days.

Williams Sonoma Test Kitchen Three-Layer Lemon Cake, Serves 8-10