Fortunately I've run out of burls and can go back to turning "normal" things. We'll not be discussing burls for now.
This is a bowl turned from a spalted crotch log, from a friend's woodpile, best guess is chestnut. Very tough stuff, whatever it is. I had to sharpen my scraper every 15 min. I think I lost an 1/8" off the thing. I hope it shows up well in the pictures, there's a beautiful flame where the spalting ends. Dimensions 4"x 11"x 3/16" , finished with wipe-on varnish.