Subway Tuna Mayo

The Subway Tuna Mayo costs £7.39 and comes to 400 kcal in a six inch, and it needs no introduction to anyone who has ever bought a sandwich in Britain. Tuna mixed with mayonnaise, in bread. It is the only fish on the sandwiches board and one of the most ordered things Subway sells.

The tuna arrives already mixed with mayo, so unlike the lean subs there is no sauce decision to agonise over; the sandwich comes pre-sauced by definition. The counter choices are bread, optional cheese, and the salad rail, where cucumber and sweetcorn have been this filling's companions since time immemorial.

The taste is exactly what it promises: rich, creamy, faintly saline, comfort in sandwich form. The mayo carries most of the fat on the panel, which is the honest price of the creaminess. Texture is soft on soft, so crisp lettuce and cucumber stop being optional and start being load bearing.

It is the order of habit rather than adventure, and there is nothing wrong with that; habits this widespread are usually right. The practical notes: it is almost always taken cold, toasting divides opinion sharply, and it is the one classic sub where adding cheese is genuinely unnecessary because the richness is already built in.

It has no true sibling on the Sandwiches menu, being the only fish, but on the numbers it sits between the lean meats and the cured ones: heavier than the Chicken Breast, lighter than the Spicy Italian. People who love it rarely compare it to anything anyway.

On value it earns its keep through sheer reliability: mid price, substantial, and the same in every store in the country. If you are having a day where the sandwich should not be another decision, this is the one the nation reaches for.