I've only been using fondant for about a month now and I'm not sure if maybe I added to much powdered sugar or something but the last time I made some mmf some of it started to dry (not in a normal way) it was cracking and looking dried out. Should I add more water to the mixture? Less sugar? Or is this normal with mmf? (The layer over the cake was fine but the bits I used food coloring in for decoration had the problem)
I think food coloring can dry out mmf. Try kneading it with shortening. That works for me.
I will definitely try that thanks! Oh, I have another question. (If you don't mind) Do you know if there is any way to make a simple sugarpaste kinda like mmf is super simple apart from my little problem. 
I made MMF in February and had no problem with drying out. I tinted it a light green color too. It was my first time making it so I can't tell you what may have caused the problem. And I haven't made it a second time yet.
As far as making fondant into gumpase. Ron Ben-Isreal (I think that's the name) has some videos on You Tube. He stated in one of them how you can take fondant and turn it into gumpaste. I am sorry that I can't remember the ingredient or which video. I have been watching so many in the last few days as I totally immerse myself into learning cake decorating. But I know it can be done. If I do happen to see it again, I'll be sure to post it here.
You probably added too much powdered sugar. Try adding some Crisco. Put some on your hands and knead it into the fondant. That should help. I find if I leave the fondant quite soft I have fewer problems with drying and cracking. Hope that helps you.
I have to order Tylose online. Ifyou are just adding it to fondant for your figures or flowers to make sugarpaste then it doesnt take much and a jar will last you quite a while. It is usually about $10 a jar with shipping I think. ( It has been a while since I ordered any cause I got a good deal on a large quantity a while back)
You can also use it to make gumpaste from scratch which is a little better if you are going to be making a bunch of flowers . I love using the Nicholas Lodge Recipe for gumpaste .
i don,t make mmf usually. i have made it. turned out good. can you add a little glycerine to this batch. little crisco on your hands and knead and knead it really well. just thinking how to help you. i would at least try it. wilton has gumtex. to add to fondant to make g/p. for flowers , modeling,etc. if you can,t get your mmf soft and pliable. then i would turn it into g/p.
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