Never Buy Potting Soil Again

I use a form of composting that heat up to grow food in the winter and is then turned into soil without ever having to turn it. Hotbeds work without electricity or other source of power for heat production. It is just 4'x8' composting of household and farm waste with a tiny bit of soil on the top for plants to grow in for the first season. Then you can remove the compost as the topping for the new hotbed.