Marks & Spencer’s food hall was where I went, as a student, to try some of your strange foods, like steak & kidney pie. I don’t think haggis was on offer there at that time. But I probably wouldn’t have had the, um, stomach to try it.
OK, @serafinaalready had me thinking of mushrooms, and now you’ve added sardines to my drooling daydreaming, UK Man. It’s still a long way until lunchtime but now my stomach is begging for food.
Sardines with mustard on saltines and sautéed mushrooms would do the trick quite nicely.