Here is what you will need
1 cup plain flour (half a pint)
1/2 cup of salt (quarter pint)
2 tablespoons of cream of tartar (optional)
1 tablespoons of cooking oil
Peppermint oil or other flavourings (optional)
1 cups of boiling water (half a pint)
1 big bowl
...and some willing helpers
Firstly, mix all the ingredients in a large bowl and mix. When the mixture starts to bond together you will feel it become harder to stir, at this point take the dough out of the bowl and need it on a clear hard surface be careful as the mixture will still be hot.
This amount is perfect if you want to make several different batches using different colours however if you prefer to make one large batch in one colour I would suggest you double up the quantities. Cream of tartar is defiantly a bonus as it makes the dough more stretchy but its not a must.
Tips: flavourings are a great addition to ad another element of sensory exploration, however I would only recommend doing this once your child is able to understand that Play Dough should not be eaten. Glitter is a great addition for all ages, initially it may come off on your hands but once well needed it shouldn't be to messy.
For the most vivid colour use gel food colouring.