Finally made this myself and the sauce is superb! Good on chicken besides a firm white fish. Love the idea of another use for grapes as sometimes the two of us can't eat them quickly enough. Adapted from www.encyclopedia.com "The grape sauce is a delightful addition to the sea bream, which is a mild-tasting WHITE fish. Mashed potato works really well as it soaks up all the flavours of the sauce. Make sure you don't throw away the green stalks of the spring onions as this adds a tasty element to the grapes." Times do NOT include reheating mashed potatoes. This goes fast so do your prep ahead.