A Buttie is a Sarny(ie) ..or sandw(H)ich.....at least when I grew in Somersetshire...I think they could hold other things than just "Chips"....but Chip butties sure rings bells
Rather have a pint O' Scrump then Fen Beer anytime...you can drink..or sprinkle it on your chip buttie in stead of Sarsons Malt
Still can't spell the queens english
cheers
Franc