Many of us have heard that a shopping list reduces food waste. List writing forces us to look at what is already in our kitchens, which prevents us from overbuying. Even so, about one-third of us shop without a list. When you are busy, it can be difficult to remember to write a list in the first place. Even if you do think of it, you may still not have time to write one in the moment.
If this describes you, there is an alternative. Consider snapping a quick "shelfie", which is a picture of your kitchen shelves. When you get to the store, look at the picture(s), and ask these questions: