"Some coffee." Because while it was probably not totally advisable, he couldn't completely deny him. If he started asking for cigarettes, on the other hand... "I'll be back in a few minutes."

Thankfully 'oatmeal and coffee' was a pretty fool-proof order, and it wasn't long at all before he came back bearing both, which he set aside on the nightstand for the moment. "Do you need any help sitting up?" Knowing Hijikata, the answer to that would be 'no' even if it should be 'yes,' but at least he'd done his job in asking.