Swedish chef Magnus Nilsson has found a use for autumn leaves in his kitchen where he has been known to boil up a broth of autumn leaves that he thinks "tastes like a season." So, think again about the autumn leaves flying through the air with dancing autumnal breezes. Autumn leaves are falling and collecting on the ground where they are now being washed by gentle autumnal rains.  They are beautiful, and Magnus Nilsson has found a use for them beyond the…