Iorweth loves food. Sincerely loves it with all his elven heart. He sees it in his hungry dreams when his stomach is growling. He snorts, pouts despisingly but eats everything they give him in the tavern. Well, not literally everything. He gives a part of the food to his Squirrels.
That is why Geralt just drops a pile of holiday cookies, apples and candies in front of him. It’s like “Consume and treat your pups”. Iorweth loves food and those who bring it.