I assume a pea fritter is mashed up peas, battered, and fried. I didn't order one to find out because I don't really like peas.
I am familiar with "fish supper" parlance, but wouldn't use it.
In your universe, does a chip buttie need to have butter, marge, lard, mayo or similar, or is it OK with just bread and chips
It is absolutely not OK with just bread and chips. I mean, you can put chips inside bread if you want, but it won't be a chip butty. Butter or marge. I'm not familiar with lard in there (though it doesn't sound appealing). Mayo is some kind of continental wrong-headed craziness.
no subject
I am familiar with "fish supper" parlance, but wouldn't use it.
In your universe, does a chip buttie need to have butter, marge, lard, mayo or similar, or is it OK with just bread and chips
It is absolutely not OK with just bread and chips. I mean, you can put chips inside bread if you want, but it won't be a chip butty. Butter or marge. I'm not familiar with lard in there (though it doesn't sound appealing). Mayo is some kind of continental wrong-headed craziness.