lcg76, have just written out the recipe for those beans of yours, sound totally delish. might have a go at the week-end, only thing i don't have in is the treacle. is the mustard the jar variety or powdered? i'm guessing jar.
Home made are delicious. Recipe similar to lcg76 but without the sugar and treacle. We use various dried beans and soak overnight. Make up a huge batch and then freeze into double portions.