Roast your chicken in the normal way with whatever seasoning you want (thyme and lemon rub is always good with chicken). Once finished pour either a little water or some wine into the roasting tin and and melt the juices that look burnt in the tin. Keep stiring until reduced or until all the burnt bits have melted. You may want add a little flour or cornflour to thicken it.
You can do the same beef or lamb but make sure you cool the juices down and remove the layer of dripping from the top.