Clearing out leftovers. Once a week I will get all the leftovers and make meal. It might be some protein or vegetables or salad or a sauce.
I also clear out the meals in the freezer before doing more groceries.
I use to do a clean out the pantry soup before grocery day.
I would then do a stocktaking of what was left. Yes totally clear out the pantry. Write it down put oldest use by dates at the front when re stocking. I would do freezer and fridge as well.
At the start of new year I would repeat the clear out. If there are things still within use by date I hadn’t used in the last 3 months, I would donate them to charity.