Last week I made my own sour cream. Yet another thing that is unbelievably easy and inexpensive to make. :)
All you need is heavy cream, buttermilk, and a container.
Since I already make my own butter I usually have heavy cream and buttermilk on hand. And as I’ve said in my making butter tutorial.. For me making butter is cheaper so making sour cream is no added cost.
Take one cup of heavy cream and 1/4 cup of buttermilk.
Pour it into a sealable container.
And let it sit for at least 24 hours until it thickens and then let it sit another 24 hours in the refrigerator.
I had to let mine sit out for almost an entire second day. This may be more common in the winter as its cooler inside, especially at night.