. . cleaning out the back fridge was for me. The dance of ingredients from the front fridge to the back and back again had become much too complex.

Also, I was running out of some sizes of storage jars. Clearing all jar storage from mid 2015 on back freed up more jars than my jar shelves can hold.

I was waaaaay overstocked in various fish stocks from my extensive fish research program.

Some went back to 2012, but there was no spoilage. I always fill jars with contents just a couple degrees below boiling, seal them air tight and let them cool before putting in the fridge.

Actually, I had a few jars from which I was going to discard the contents left out in the sun for a week. They did not spoil.