How do I get a meatball?

Hint 1 of 11:

The first thing you need to do is remember that the meatballs are being fed
to someone.  Someone who is very picky about the way his meatballs are served.

Hint 2 of 11:

For one thing, he doesn't like any extra seasoning in his food.

Hint 3 of 11:

Fingus is enough of an expert cook not to tamper with people's food.

Hint 4 of 11:

So have Winkle sprinkle some pepper on the pile of meatballs.  Wait a bit and
you will see the results.

Hint 5 of 11:

Notice that the cook is away from his case for a few seconds.  Maybe you could
use his absence as a chance to get rid of him more permanently.