Hat in "virgin merino wool"

WHen I was done with the retro sweather for Yr - I did what I was determined not to do - I went to Silkeborg and visited Garn Oasen and ended up with some delicious yarn. Soft, wool - nice red colour. I had just lost a hat -forgot it on the ferry :-( 

SO then I just started out knitting a hat.
For my self.

No recipe.

Trial and error.