Menus that once ran to several pages now often fit on one. The contraction is driven by operational arithmetic, and every element of it points the same direction.
Each dish carries a standing cost whether it sells or not
A dish on the menu requires its ingredients to be held in stock, prepared daily and kept within their usable life.
An item that sells twice a night still consumes storage space, preparation time and the risk that its components will be thrown away.
Removing it releases all three at once, which is why menu reduction is usually the first response to pressure on margins.
Waste scales with the number of ingredients
A long menu needs a wide range of ingredients, many of which appear in only one dish and cannot be redeployed if that dish does not sell.
A short menu built so that ingredients recur across several dishes lets the kitchen move stock between them as demand shifts through the week.
The saving is substantial, since food waste is one of the larger controllable costs in a restaurant and it grows with menu breadth.
Skilled kitchen labour became harder to staff
A broad menu requires cooks who can execute many preparations to standard, and a kitchen with recruitment difficulties cannot rely on that depth.
Narrowing the menu reduces the number of things any individual has to master, which shortens training and makes the kitchen less fragile when someone leaves.
It also raises consistency, since each dish is made far more often and the cooks making it are practised rather than occasional.
Delivery volume rewards a narrow, robust list
Kitchens now produce a significant share of their output for collection or delivery, where dishes must survive packaging and travel.
Dishes that do not travel are worth less to a kitchen than they were, and a menu weighted towards those that do is simply more productive per hour.
Since delivery orders arrive alongside dining room service, a menu the kitchen can run at speed matters more than one that reads impressively.
Guests decide faster from a shorter list
A large menu slows ordering, lengthens the time a table is occupied before it generates revenue and increases the chance of hesitation.
Shorter lists move a table through its decision quickly, which raises turnover in the same room without any change to the space.
The shorter menu therefore serves the kitchen, the accounts and the room at once, which is why the trend has been so uniform across very different restaurants.