Luis takes up in the kitchen, in the immediate absence of his fellow scientist. He isn't as good of a cook, but he's able to make a mean patatas bravas to provide something to snack on. Feel free to come help him chop potatoes - there may only be 13 of them left, now, but 13 people can eat a lot of delicious fried potatoes.

After he finishes the first batch, he helps take plates around before starting on the next batch (unlike Leon, he will bring the food to you).

"The grief will still be there in the morning - don't make it worse with hunger, eh?"

And after that (and yes, after he gets some for himself), Luis takes his guitar to the sitting room and starts playing.