It's listed on the menu as being 1090kcal, which using the 20 calories = 1 Syn rule works out at 54.5 Syns. Some people may say you can deduct a few Syns for the chicken and pork (as they are free foods in their "plain" state) but in all honesty it wouldn't make that much of a difference. I'd stick at the 54.5 Syns to be on the safe side. Very Synful!