Sugar Boat: a relaxed, informal neighbourhood bistro offering great food at great value in a warm & welcoming environment. Located at 30 Colquhoun Square in the heart of Helensburgh, we’re open from 9 o’clock Monday to Saturday and 10 on a Sunday through until late at night: serving breakfast, morning coffees (and a home made scone or two), afternoon cream teas and inspired, seasonal à la carte bistro menus which showcase the best local produce.