Possible Clues:

• One sounds an ass if one is tocook like this
• Bishop wants to promote cook
• Sounds like what the start of 23 down does in the kitchen
• Cook slowly with little water in closed container
• Stew in closed pan
• Cook is employed by Scottish bank
• Heat slowly to fuse metal, they say
• Silly sounds to get it up at last in the kitchen
• Be around where the artist is to cook it
• Note - more money for cook