In an environment of volatile food inflation and squeezed consumer wallets, African restaurant operators cannot afford to guess which dishes are driving their profits.
Every item on a menu must earn its spot by delivering either high sales volume or strong cash margins.
A menu engineering exercise is a structured, data-driven method that helps restaurateurs evaluate their offerings and adjust them to maximize profitability.
The metrics that matter: Margin over percentage
Many SME restaurant owners in markets like Nigeria, Ghana, or Kenya make the mistake of focusing solely on food cost percentages.
While food cost percentage is useful for high-level budgeting, menu engineering prioritizes the contribution margin, which is the actual cash profit an item generates.
The formula is straightforward: Contribution Margin equals Selling Price minus Cost of Ingredients.
For example, consider a Lagos-based bistro comparing two dishes. A Jollof rice platter sells for N6,000 with a food cost of N2,000, yielding a N4,000 contribution margin.
A premium seafood pasta sells for N15,000 with a food cost of N8,000, yielding a N7,000 contribution margin.
Even though the Jollof rice has a lower food cost percentage (33% compared to the pasta’s 53%), the seafood pasta puts N3,000 more cash into the business register for every portion sold.
Classifying the menu into four quadrants
To run a menu engineering exercise, operators must track both the sales volume and the contribution margin of each item over a 30-day period.
Using this data, every dish is classified into one of four distinct categories modeled on the classic Boston Consulting Group matrix.
Stars (High Popularity, High Profit): These valuable dishes sell frequently and yield high cash margins. Operators should maintain strict quality control and keep their menu placement prominent.
Plowhorses (High Popularity, Low Profit): These dishes are crowd favorites but expensive to make. A classic example is a standard beef burger or a half-chicken platter during a period of high poultry inflation.
For Plowhorses, operators should look for subtle ways to reduce costs without destroying customer loyalty. This can involve renegotiating supplier terms or slightly adjusting portion sizes.
Puzzles (Low Popularity, High Profit): These items generate excellent margins but are rarely ordered. Often, they suffer from poor menu descriptions, lack of promotion, or overpricing.
Operators can turn Puzzles into Stars by renaming them, featuring them on specials boards, or training waitstaff to actively recommend them.
Dogs (Low Popularity, Low Profit): These dishes are expensive to prep, generate low margins, and rarely sell. They clog up the kitchen, increase food waste, and tie up valuable working capital.
In almost all cases, Dogs should be immediately removed from the menu or completely reinvented.
Practical steps to execute the exercise
To begin, the management team must construct an accurate recipe cost sheet for every item. This must include every single ingredient, down to the cooking oil, spices, and garnishes.
Next, extract the sales mix report from the point-of-sale (POS) system for the last 30 to 90 days to determine how many units of each item were sold.
Plot these items on a simple grid or spreadsheet using average popularity and average contribution margin as the dividing lines.
Once classified, make strategic changes to layout and pricing. Place your Stars in the “sweet spots” of the physical or digital menu, such as the top-right corner, where the eye naturally lands first.
Protecting cash flow in an inflationary market
For African restaurant owners, running this exercise once is not enough. With fluctuating currency values and rising logistics costs, ingredient prices change rapidly.
Running a menu engineering exercise at least once every quarter ensures that menu prices reflect current market realities and protect the business’s cash flow.
A structured review prevents the business from quietly absorbing supplier price hikes until it is too late.
Owners should take immediate action by assigning their kitchen manager or chef to update the ingredient cost sheets for their top ten selling items this week.
