Yes, you can. I like using fresh homemade orange juice, so I buy the orange, then I squeeze it, but you can use pasteurized orange juice if you like.To Store: Store leftovers in an airtight container in the fridge for 2-3 days.Freeze: yes, you can freeze this cake, just wrap it in 2 layers of plastic wrap and a layer of foil sheet and keep it in the freezer for 1-2 months.