Start by combining the flour, salt, citric acid, oil and turmeric powder. Mix well and adjust the turmeric powder as needed for your color choice. Feel free to swap the powder out for some food coloring; just use as much as you wish for the color of choice.
Once well mixed, add in the 3/4 cup of boiling water. The water will take right to the mixture and seem like not enough but it is perfect; just begin to mix together until dough forms. I like to use my hands in the bowl and then transfer the playdoh to the countertop to knead.
Knead and knead until the dough is nice and smooth. Store in a wax wrap or an airtight container to keep. It will last about 3 months if properly taken care of!