When a handful of proteins and specialty items carry most of your plate cost, an average tells you almost nothing. Category-level COGS shows a change in protein or seafood cost on its own, so you can adjust a dish or a supplier rather than the whole menu.
Wine and spirits inventory can represent a serious share of working capital, and beverage margin behaves nothing like food margin. Tracking beverage cost as its own category — separate from food, separate from labor — keeps a strong bar from masking a soft kitchen, or the reverse.
Fine dining carries a larger team per guest by design. What matters is whether labor is holding a consistent relationship to revenue as covers and check averages move. DishBooks reports labor inside prime cost so that relationship is visible period over period.
A seasonal menu change alters your cost structure. Comparable periods and category-level detail let you see what a change did, and Dex will answer the specific question — which category moved, and by how much — without you assembling a report to find out.
