I don't think he's really tried sweets. He may have tried some, but after they figured out what chocolate does... Well, okay, they'd've had to test what does what. O___o Ooooh, that doesn't sound dangerous.

"Okay, I've been feeding you these for who knows how long and you haven't keeled over yet. We'll just stick with these just in case I end up giving you something you can't take."
Explains why Marland doesn't experiment with food. XD

*grins*