Inevitably, that food ends up going to waste, and subsequently you end up wasting money. If this happens to a lot, health blog Greatist suggests keeping a log of your wasted food for a week.

Lumen’s metabolic food log But a missing piece inside the Lumen iOS app was a food log.

Those meal engrams are special memory traces that store information about the food that was eaten, the researchers explained in the paper. Consider it a mental food log of sorts.