Because while it's not poisonous, it's- [Aand Cal just took a bite, and Sabriel has to stifle a sudden laugh.] Bitter, yes.

I've got some leftovers, if you want them. Or you could just have a sandwich.

[There's always something left over, and most of the crew that can cook are in the habit of making sure there's something around. Plus the assortment of canned and instant foods. Sabriel pulls out a small container of soup- something she'd made yesterday- out of the fridge and takes off the lid.]

Here. There's this this thing called a microwave you can use to reheat things.

[It's some kind of advanced science that Sabriel doesn't fully understand.]