Possible Clues:

• Boar's feet cooked as traditional English fare
• Oven to be held by judge: that's where it's done
• Sunday meat?
• Like filling tripe and grouse cut on a Sunday?
• Traditional Sunday fare
• Spooner's treasure bank — food
• -- plant, the fetid iris
• Good humoured ridicule has complaint for Sunday lunch
• Oven-cooked grouse dish
• Food often eaten on Sun. that could be cooked before Sat.