Planting Winter Crops

The three most interesting things I found about this article were that you could protect your crops from the winter by planting them in a raised bed because they provide extra drainage and will warm faster in brief sunny patches. Another thing I found interesting was that you could put straw around your raised beds for extra insulation and to protect them from frost. The last thing I found interesting was that when growing carrots and other root vegetables, their roots with become sweeter with the cold. Something that I will look for next time I'm in the garden is if there are any things used to protect the crops for the winter. One question I have is what fruits and/or vegetables actually like the cold and do not need protection from it?