Those times when you eat something out of the fridge that you don't remember how long it has been there

I did that with homemade yogurt. The lid came loose and it dehydrated quite a bit. It had gotten shoved back behind other things on the top shelf of the refrigerator. No mold that I could see so I stuck a spoon in it and tasted it. Tasted like a cross between sour cream and cream cheese. I ate it all and started making larger batches and allowing it to strain in a colander lined with a coffee filter for about 24 hours. Used it for toast spread with honey.