Cream of Tartar 250 grams - save £1.00 Cream of Tartar 250 gram pack for mordanting wool & silk  - SAVE £1.00 over the 50 gram price of Cream of Tartar. Cream of Tartar is weighed and sealed in a polythene bag. The bag is then labelled, placed in a padded envelope and posted to you First Class. Price £12.75 Click on BUY button to buy