What is this?

It's time for some confession. When I was in the singles' group, we had a game night. I played a game where you had to tell the truth about something after others had tried to guess the correct answer relative to you. My question? "How many unknown objects are currently in your fridge?" After everyone guessed, I said, "Um. None. That would be gross." I remember Shelley McKee saying, "SARA FISH!! You are lying! Don't you have at least one spoiled thing in your fridge?" I said, "No, I really don't." Well, fast forward about 15 years. Life has changed. I prepare 6 dinners a week for 7 people (yes, Benaiah counts). That's 42 servings weekly if you are thinking in terms of a cafeteria (and Ross eats double). There are unknown objects in my fridge. Last week I found this one.
No, it is not blue play-doh, nor is it a base for a dried flower arrangement. It is a lonely piece of white sandwich bread which lost all of its friends somehow, got shoved behind a jar of something, and just gave up all hope on being noticed. So, Shelley, I must change my answer to...oh, about 4 probably.