Not the cooker, Luka

Gordon was working, so while the rest of us were still cosy in my bed, we planned to go for a walk. A request was made for us to take hot chocolate. 'Ok, says me, we'll do that.'...... 'We can't do that dilly billy says Luka, the cooker is too big'.
So, when it was time to stop, after hiking through sleet and freezing wind, we introduced him to the flask.