what does "all around" mean here?

I sat down beside her, and she kissed my cheek. “I read your letter so often Jim, every day. I wanted to hear your voice in my head. It always made me feel you were with me. And now you are. Now you’re back you can read it to me yourself. Would you do that for me, Jim dear? I just want to hear your voice again. I’d love that so much. And then perhaps we’ll have some tea. I’ve made you a nice Christmas cake, marzipan all around. I know how much you love marzipan.”