Looks delish making our own cream sauces is so easy! I absolutely follow the not following recipes moto, @silvergingerman wonders how that all works, everything based of taste. For your "boiling chicken" or any other meat problem, coat the cut strips in a tsp of corn starch and mix it up before frying in a pan, it helps retain the juices inside the strips and will give you that sear you are looking for.