I have nothing but a words of praise, since you get smooth and nice dough that is not sticking to fingers. Easy to make and easy to enjoy in play.
40g citric acid (limuntus)
5 Tbsp oil
250 ml water
Mix all ingredients except the water. It should be added bit by bit, till you get smooth dough.
At the end, use just a basic food coloring and get the rest while practice mixing colors with those three.
This playdough should be used right away since later on it dries a bit. But its so easy and fast to make that I guess it's not a problem at all.
At the end of our game, we made a beads, but forgot them in my parents home. I'll let you know how they look like for a few months. :)
Easy like sunday morning.