Key Item Variance Strategy: Tracking the Critical Few

It is not uncommon for 10 to 20 key inventory items to account for 70% or more of a restaurant's total Cost of Goods Sold (COGS). A Key Item Variance Strategy compares theoretical usage (what should have been used) to actual usage for your 10 to 20 most expensive items to determine usage variances.

Industry studies, as well as COGS-Well’s customers, consistently find that a key item variance strategy reduces COGS by 2% or more. There's a reason so many of our customers lean heavily on this strategy: it's easy to implement and maintain, and it focuses on the most impactful items.

Operators can use this strategy as an alternative to full inventory and recipe management in a cost control system like COGS-Well, or simply as a best practice for implementing theoretical versus actual (TvA) variance reporting.

Why a Key Item Variance Strategy Reduces Costs

There are several reasons why a key item variance strategy can reduce your COGS:

1. The Hawthorne Effect: Behavior improves when people know they’re being watched. Staff knowing that high-value items are being tracked reduces waste, theft, and over-portioning.

2. Manager/Franchise Owner Buy-In: Asking a manager to count 10 to 20 key items per week is reasonable. It is harder to justify counting 500 items or more, especially when the actual benefit is unclear.

3. Peer-to-Peer Accountability: For multi-unit brands, a key item strategy lets you “stack-rank” your locations. Comparing variances across multiple sites during a weekly meeting or via shared reporting provides added incentives.

The Objective: Theoretical vs Actual Inventory Variance

The ultimate goal of a key item strategy is to be able to report a Theoretical vs Actual (TvA) inventory usage variance for your key items every week. This report can be run in detail by each restaurant manager or to evaluate and compare multiple locations by a district manager.

Here is an example usage variance report for the key items of a single location:

Here is a usage variance report for the key items across multiple locations:

Why a Key Item Variance Strategy Works

The reason a key item strategy works is that you don’t need to count every inventory item or create detailed recipes for your entire menu. Your team can focus variance tracking on the inventory items that matter the most.

1. Fast Set Up: Key Items can be easily identified based on purchase history. If your time or resources are limited, single-ingredient recipes can be set up quickly for your key items.

2. Implement Easily: Since managers are only required to count 10 or 20 inventory items, a weekly or even daily count is realistic.

Building a Key Item Variance Culture

Many of our successful restaurant brands treat Key Item Variance as part of their management culture for evaluating performance. When managers are benchmarked on the gap between theoretical and actual, they are being evaluated on their restaurant’s sales and purchases (what they can control).

“By shifting our focus to theoretical versus actual variances, the managers know that regardless of inventory cost changes, we are evaluating them based on what they can control. They realize that variances only occur from things like waste, over- or under-portioning, theft, etc.” - Jennifer Beougher, CFO, Ruby Slipper Restaurant Group

Summary

A Key Item Variance strategy enables you to focus on your most impactful items and increase visibility around waste, portioning, or theft. If counts and variance reports are done daily or weekly for these key items, you can react more quickly, and your team becomes more accountable.

For operators with limited resources, this strategy is an easier way to get a core benefit from an inventory, recipe, and cost management system like COGS-Well.