Our main fridge is smaller than yours. Not by much but still too small. I also have to do the cooking for the dogs (at least one is "home-fed" since he's old and has health issues - without the food I cook for him he'd be dead by now. ).

We removed the sofa bed (we had 2) on one side and put in a washer/dryer combo and that extra fridge. On top we built a nice big shelf and it fits a 45" tv and the cats food bowls.

But yes, we do try to avoid wasting food. I hate this when you think some people cannot even afford the basics and too many of us throw away good stuff.