Possible Clues:

• Something tasteless or dull getting eaten initially
• For example, spots upcoming heavy meal
• Something filling skip that obviously doesn't get eaten, initially
• Perhaps Dorothy's served up heavy food
• Heavy food? Eccentric gets to eat an excessive amount
• Heavy food dogs eat, not a liquid
• Set about catching wild dog that's hard going to put away
• Inedible food, dog's tea almost entirely a dog's breakfast!
• On the counter, say with peppers filling dish
• Heavy food awkward to digest without it