A slice, in the parlance of British restaurants and grocery stores, is a miniature lozenge-shaped pie made of flaky pastry wrapped around a savory creamy filling. They are delightful parcels of hot, filling goodness, convenient, cheap, and satisfying. Think chicken pot pie, but in a contained parcel you can hold in your hand.
Not to use a maul to hammer home the analogy, but I’m sort of shooting for this theme here. Miniature bits of goodness, maybe not nutritious, maybe not good for you in the long term, but really delightful while you’re partaking. You can get the good-for-you content elsewhere. In the meantime, enjoy my slices.