Why not use a heating tower to burn excess spoilage? They can go through 64 spoilage per second, compared to the 6.25 base of an assembling machine 3, and can do so infinitely with no other setup (as they happily keep burning everything they are fed even when at max temperature).

TL;DR Add a checkbox to have chest output items with the spoilage level (0 to 100, or amount of seconds left, or similar) of the most spoiled item/stack of each item type on that belt or in that chest in place of the item count. Why? Spoilage progress of ingredients affects spoilage progress of pro...