How much food waste do Minnesotans compost at home? This is one of those questions where we really don’t know the answer. Backyard composting is a purely private affair, one that doesn’t pass through any sort of permitting or reporting process. So what’s an ecologist to do? I often find myself in a position like this, where nobody has measured the thing I want to know — but I can piece together enough information to make a decent estimate. It’s a fascinating process, so let’s pull back the curtain and take a look…