"Caramelized onions give amazing complexity to the hard cider sauce recipe. The sauce is so delicious; the chicken is nearly an afterthought. Cook’s note: Hard ciders from France are usually from Normandy and Brittany. If you have the choice, buy a Cidre Doux, or sweet cider. Demi-Sec and Cidre Brut are much too strong and dry for this recipe...."