How to repair a Beech draining board that has severely black grooves?

I have a Beech Draining Board and the grooves have cracked and
Turned black with the damp - has anyone any ideas on how to
Rectify this problem ( other than buying a new draining board/work
top) very expensive !!!
Thank you - jacyfish
Jacyfish, November 2013


done
The black is a type of mould. I'd use a neat bleach and soak the board in it, rinse and dry thoroughly. Then get a good wood filler and fill the cracks. Give the board several good coatings of suitable wood oil and it should be fixed.

Graham Lane, January 2014