I never thought about play dough needing to be gluten free, but I know Jackson has tried eating it before, so why not?!
3/4 Cup White Rice Flour
3/4 Cup Cornstarch
3/4 Cup Salt
1 Tbsp Cream of Tartar (same thing as tartaric acid powder – NOT tartar sauce)
2 tsp olive or seed oil
1 ½ Cup Water, hot but not boiling
Food Coloring, as desired
Add all dry ingredients in a pot. Add vegetable oil, then the water, and continue to mix until thoroughly combined. Then turn on heat. Heat the pot on the stove over low heat – stir continuously for about 3 minutes. When the dough pulls away from the sides into a big ball, place dough into glass bowl
Once cool enough to handle. Divide into 3-5 pieces. Add several drops of natural food coloring to the ball and massage until you get the color you desire. I like to make an indentation in the ball, drop in the food coloring, fold the ball over so the color is in the middle, and slowly knead until color is blended. If the dough is too wet, add cornstarch. If it’s too dry, massage in a bit of water.
I find that when I add coloring it gets a bit too wet and sticky. I usually let is dry out for a few hours here and there (maybe 2 or 3 hours a few times – too many hours and it will get crusty around the edges). Then it’s the perfect texture and not sticky any more. While you can also knead a bit of cornstarch in each batch, if you have a bit of sensory sensitivity like I must, you may not like that – it’s a bit tough for me so I use my palms.
Store in an airtight container. I do not store mine in the refrigerator and it stays very fresh.