[ He knows Alucard needs protein, not so much because he has any clue about nutrition but because the castle keeps filling the kitchen with meat. He's not discussed that because it doesn't seem important and also an abundance of meat is not a great topic of conversation, considering recent events. ]

If it's about the orange stuff, I don't fucking know. [ Sweet potato. The castle gave him sweet potato. ] It cooks well enough, and I don't think the castle's going to be giving us anything poisonous.