Ahhh well, I may be able to help there... for the life of me, I cannot remember whence it came, but I recall a recipe for a fat chub being along the lines of the following...I catch myself thinking back to it quite a lot on the river bank wondering what sort of strange recipe Walton would suggest for a fat chub,
Take your fish and place him on a stout wooden chopping board...
Descale and gut him thoroughly...
Fillet and debone him as best you can,...
Fill his cavity with as many herbs and spices you can muster...
Coat his body well with yet more spices...
Then throw away your Chub and cook your stout chopping board...