Well, that depends a lot on how long or often have you “sinned”, as we like to say, over Christmas. 🙂 If it was just, say, one visit to relatives, it’s not such a disaster. You can carry on where you are. But if we’re talking about, say, the whole holiday. It would be better start fresh from Start. But even on SCD you can eat well enough during Christmas, believe me, I know something about that. 😉 Just take inspiration from the recipes on our website or get our “Marky SCD Cookbook No. 2” or No. 4, with Christmas themed recipes and many others.