Customer Analytics
What is attach rate on a restaurant menu?
Attach rate is how often one item is purchased alongside another — the share of entrée orders that add a drink, a side, or a dessert. It measures the basket-building behavior of the menu: some items earn little on their own but reliably pull high-margin attachments with them, which makes their true value invisible in a simple item sales report.
Attach behavior changes both pricing and menu decisions. Pricing a traffic-driving entrée as if it stood alone ignores the attached margin it carries into every order; cutting a 'weak' item that quietly anchors attachments removes more contribution than the item's own line suggested. Basket-level POS data is what makes these relationships measurable.
Attach rate is also one of the most controllable numbers in the business — menu placement, combo architecture, and digital-ordering prompts all move it — and because attachments are usually high-margin, small attach gains convert to contribution almost dollar for dollar.
Why it matters
The menu is a system, not a list. Attach rate is the metric that exposes the connections — which items build baskets, which orders leave margin on the table, and what a proposed cut would really cost.
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