In Eric Carle's book "The Very Hungry Caterpillar", the title character eats a piece of which fruit pie?

"The Very Hungry Caterpillar" is a 1969 children's picture book designed, illustrated, and written by American children's author and illustrator Eric Carle. The plot follows a very hungry caterpillar that eats a variety of foods before pupating and emerging as a butterfly.

On an early Sunday morning, "a tiny and very hungry caterpillar" hatches from his egg and searches for something to eat. For the following five days, Monday through Friday, the very hungry caterpillar eats through an increasing quantity of fruit: one apple on Monday, two pears on Tuesday, three plums on Wednesday, four strawberries on Thursday, and five oranges on Friday. Each day, however, the caterpillar is still hungry. On Saturday, he feasts on a piece of chocolate cake, an ice-cream cone, a pickle, a slice of Swiss cheese, a slice of salami, a lollipop, a piece of cherry pie, a sausage, a cupcake and a slice of watermelon. Later that night, he gets a stomach ache from overeating.

The following Sunday, the very hungry caterpillar eats a green leaf. Now "big and fat", he builds a cocoon around himself and stays inside of it for more than two weeks. After, he nibbles a hole and pushes his way out, emerging as a large, multi-colored butterfly.