In 2023, Red Lobster made its $20 ‘Ultimate Endless Shrimp’ deal a permanent fixture to pull diners in. It worked spectacularly — the promotion went viral and packed the restaurants. It also helped drive the 60-year-old chain into Chapter 11 bankruptcy in May 2024, contributing to an $11 million loss. The problem was never too few customers. It was that each hungry customer lost the company money.
The Math
The number that decides this is contribution margin: what a sale earns after the costs that rise with that sale. For an all-you-can-eat deal, the variable cost is however much shrimp a customer eats — and that was uncapped.
At $20 for unlimited shrimp, a light eater might scrape a small profit. But the average diner — and the viral crowd the deal attracted — ate enough that the food cost sailed past the $20 price. That’s a negative contribution margin on every table.
The contribution margin on an all-you-can-eat plate (illustrative)
That minus sign is the whole story. Combined with post-pandemic foot-traffic declines, inflation and expensive leases, the promotion helped push Red Lobster to an $11m loss and into bankruptcy. Volume didn’t dilute the loss — it multiplied it. When every customer loses money, a packed restaurant loses more than an empty one.
The Nuance
Loss-leaders can work — a cheap item that drags in profitable spending (drinks, desserts, repeat visits) can more than pay for itself. Red Lobster’s mistake was making an uncapped, negative-margin item permanent, so there was no ceiling on the loss and nothing reliably profitable bolted to it. A promotion is only ever as good as the contribution margin sitting underneath it.What’s Your Real Margin Per Sale?
Business Buddy’s profit-margin tool shows your gross profit, margin and markup on any product in seconds — so you know whether volume is your friend or your enemy before you run a promotion. Business Buddy puts profit margin, break-even, revenue growth, cash flow, current ratio and more in one place — pick the tool that matches your question, enter your figures, and get an instant answer. Free, private, no sign-up.
Open Business Buddy →💬 Your turn
A — I know the margin on every item before I discount it.
B — I run deals on gut feel and hope.
Drop A or B — and what’s the most ‘too good to be true’ restaurant deal you’ve ever milked for all it was worth?
- Red Lobster files for bankruptcy after all-you-can-eat shrimp missteps — NPR
- How Red Lobster’s endless shrimp promotion drove it into bankruptcy — CNN
- The $11m shrimp mistake Red Lobster won’t repeat — Fast Company
— Maya, who loves a bargain but has never once expected a restaurant to lose money feeding her.