This makes the best barbecue chicken on the planet. The extra effort of making the marinade is a definite payoff. The sweet mustard glaze gives the grilled chicken a wonderful crisp coating. The chicken does need to marinate overnight so plan ahead. This mustard sauce is also fantastic on pork chops. MAKE AHEAD: The sauce can be safely stored in a lidded jar in the refrigerator for a month. WINE: The sweet barbecue sauce mate well with a full-bodied, fruity grenache such as Domaine Lafond Roc-Epine Lirac Blanc 2004 or an off dry fruity Reisling such as the very easy to drink 2002 Reisling - Domaine Fernand Engel.