Grandma Tricked Me?!?! ("Play-Doh" Recipe)

Mom copied me on this email to Kristin. Can't believe my beloved Grandma tricked me...

Kristin, 

Found something today that might interest you. My Mom's recipe for Play-Doh that you make yourself: 1 cup flour, 1/2 cup salt, 2 teaspoons cream of tartar (this is very important), 1 cup water, 1 T. vegetable oil. Put in pan and stir over medium heat. Cook, stirring constantly for approximately 3 minutes. Store in an air tight container.  (Put food coloring in water before cooking if you want it colored. Also, leave out vegetable oil if you plan to make something and let it harden.) 

Story: Mom made Steve and Brian this dough to play with. Brian did not like it because it was not Play-Doh so he didn't play with it. So my Mom went out and bought Play-Doh for her "little pumpkin" and he played and played with it-well when it got dry she took out the old Play-Doh and made hers and put it in the Play-Doh containers, and he played and played with the "Play-Doh." 

Love Mom/Karen