We now have a Boxing Day tradition of having salmon en croute and a prawn ring. Because my SIL really loves it and they usually come over on Boxing Day. Boxing Day always did have a bit of a fishy theme (I was cajoled into making salmon & cheese flan every year from 15 until I left) but it's a definite tradition now.
Not that I'm complaining, I love it too.
Although it's Boxing Day lunch I like best - jacket potatoes, sliced turkey, baked beans and pickles. There's something so simple and yet so wholesome about it.
I forgot to mention sweets on my Christmas food list. Again, it was the only tim we were allowed to eat them almost totally at will. Even at Easter we were monitored - especially after the year my brother went to bed with a headache and sicked chocolate up all over his duvet.
We always had pick n mix in a big Roses tin. Which was of course cheaper than buying Roses, but Dad always sneaked some in anyway. They came from Woolworth's, which had a great selection in those days, catering mostly for old ladies. They still do apparently, but the real money is in the kid's section, where you're charged an arm and a leg for things your parents bought as penny sweets. Still, I suppose they've gone up in line with house prices in the last 20 years!
We never made our own sweets (too messy, too expensive according to Mum) but we did make shortbread and mince pies.
BTW I don't know if sausage rolls are proper Christmas food outside our house. It's just that they're quick, easy and self contained. I'll take a photo of them this Christmas to prove it
