Cream of tartare?

[Mazzer]

I would like to make my own play-doh and believe this is the key ingredient. Today I tried to buy this in the big Sainsburys, the health food shop, and the pharmacy but nobody had it. Any idea where this ingredient can be bought?

Many thanks!

[Dotkin]

Hi Sainbury's do normally have it - it will be in the baking section...

[Mazzer]

Thanks! Will have another look in Sainsburys.