Posted: 02/04/2014 at 14:25
If you have grass to mow, you could mix the entire contents of the heap with an equal quantity of grass and let it heat up and "cook" again. My kitchen waste never composts well over winter, and I always do this with the first cut of grass. I did it last weekend and the entire heap is now cooking nicely.
As Dave says. Dont put perennial weed roots (dandelion, docks, ) or seed heads(dandelion) in.