Dont know where to post this...where can I buy 'cream of tartar'

[puppie]

Sorry I know its not the right section but I want to make my own playdough and have no idea where I would buy 'Cream of tartar', hope someone can help!

x

In the supermarket, baking section.

You will find it in the baking isle section along with baking powder, bicarbonate of soda etc.

sainsburys next to the flour

Ta everyone