I successfully created several composts over the last two years using, what I believe is the "cold compost method". I have an open heap which I turn from time to time during the initial year. I used it in the second year for all kind of things mainly for enriching the soil, compost tea and for a seed-starting-mix (I even used it pure). In my eyes it works well in these three kinds of applications.
However there is one thing which I'd like to improve. Especially for the seed-starting-process I noticed that there is plenty unwanted germination most likely coming from unwanted seeds in the compost.
Is there a way to clear, posterior, the compost from weed-seeds?
I read somewhere that putting the soil into the microwave helps. With that I assume that the applied heat will kill at least the seeds and maybe other unwanted "things". Can I use an oven as well? Is cooking the compost-soil over an open fire a possibility? What would be the highest temperature allowed? In other words, is there a risk of reducing the quality of the compost when it gets too hot?