It's been about 12+ years since I've regularly dumpstered food, but my experience is that more food was being thrown out before (but maybe not much before) the sell-by date than after.

I think the issue is that of given the choice between something with a sell-by date a few days in the future or 10-15 days in the future at the same cost, nearly everyone is going to take the food with the better date. Which means the arrival of a new batch of inventory makes the older inventory barely salable.

Technical solutions could help here: it is taxing on humans and most POS systems to have to adjust the price of older inventory, but if that could be done automatically (or the labor pushed onto the customer to identify the condition in exchange for a discount) people looking for deals might help reduce this type of waste.

You just need to include the expiration date in the barcode and apply discounts automatically.

> Technical solutions could help here: it is taxing on humans and most POS systems to have to adjust the price of older inventory, but if that could be done automatically

That's a pretty good idea aid seems it could be solved entirely by software (+some signs for awareness).

I doubt you've got a good data stream about sell-by dates, tho - the old and new have the same UPC generally. Maybe OCR of sell by stickers? And this doesn't help things that don't have dates, like produce.

Dang, I figured that stuff would have been included in the barcode. There must be some way to track this automatically because I doubt stores are managing their inventory on tracking this manually in 2020.

Ever done store inventory? It's one of life's little joys.

I've heard of them but I figured it was a periodic thing to make sure the stores automatic accounting aligns with actual stock to adjust for stolen, damaged, or misplaced product. I didn't think it was for checking expectations.

A good grocery store will waste less. They'll have someone merge multiple cartons of eggs to refill ones that have one cracked (assuming the carton isn't soaked). They'll see they have a bunch of inventory about to go past sell-by and will toss up a sale to get rid of as much of the near-expiration items. They'll be careful about rotating stock so that the older items are up front so people who are less date-sensitive will buy them.

> They'll have someone merge multiple cartons of eggs to refill ones that have one cracked

That's technically illegal. Grocery stores are not allowed to repackage pre-packaged food. We have strict food-handling regulations in place to protect consumers, which is part of what makes food waste such an issue.