In a large bowl, combine all of your dry ingredients (flour, cream of tartar, salt, 2 Kool-Aid packets) and mix well.
Add the vegetable oil and water to a pot. Mix together.
Add the dry ingredients to your pot and mix well.
Cook on low to medium heat until dough starts to form and become dry.
Once a ball of dough starts to form and the playdough looks fully cooked, remove from the heat and let the dough cool before touching. If you added in extra Kool-aid packets, it may take longer to cook. Just keep mixing until the dough forms.
After the dough has cooled, knead it for 5 minutes to make the dough soft and smooth.
If you find when kneading it is really sticky, put it back on the stove and cook for 1-2 more minutes. It should not be extremely sticky when kneading.