Mushy peas - don't knock them till you've tried them. As Sir Thomas Beecham said, you should try everything once in this life, except incest and Morris dancing. And I'm sure you'd disagree with him about the Morris dancing.
No one has mentioned Cornish Pasties...If you aren't too worried about Mad Cow Disease.........
Anyway, try to make it to the Half Moon in Bishop's Stortford, Herts, on Sunday 13th, and you should have an enjoyable evening.