The compost caddy fills up, but it is difficult to remember what went into it. Was it mostly unavoidable peel, forgotten leftovers or produce bought for a recipe that never happened?
A short food-waste diary makes that distinction visible. You are not trying to produce a perfect household or weigh every crumb forever. You are looking for one recurring pattern you can change.
Record the reason as well as the item
For several ordinary days, note what was discarded, roughly how much and why. Useful categories might include spoiled before use, cooked too much, disliked, forgotten or inedible preparation scraps. Keep the system simple enough that everyone involved can use it.
The US EPA’s guide to preventing wasted food at home discusses planning, storage and preparation. Its emphasis on prevention is useful here: dealing responsibly with scraps is different from avoiding edible food becoming waste in the first place.
Choose the largest repeated cause
If half-used herbs recur, buying less or planning another use may help. If cooked rice repeatedly remains after meals, portioning needs attention. A fridge full of carefully labelled boxes will not solve a habit of cooking far more than the household eats.
Consider an illustrative diary with three entries for forgotten leftovers and one for vegetable peel. The sensible experiment targets leftover visibility and meal planning, not an elaborate project to eliminate every peel.
Change one part of the routine
Try a designated place for food that needs using soon, smaller initial portions or a shopping quantity matched to the actual week. Check storage and reheating guidance for the food involved. Freeze suitable items promptly when appropriate rather than waiting until safety is uncertain.
Do not taste questionable food to determine whether it is safe, and do not let a waste-reduction goal override use-by instructions or other food-safety guidance. Some discarded food is the result of an earlier planning problem, not something to rescue at any cost.
Review without blame
Repeat the same brief record after the change. Compare the relevant pattern rather than celebrating a lower bin weight that merely reflects eating out more often. Ask what was easy and what created extra work.
A useful diary ends in a practical habit, not a permanent guilt ledger. When you understand why food is leaving the kitchen uneaten, you can make a smaller, more effective change at the point where the waste begins.