In a large bowl, combine the butter, bicarbonate of soda, cardamom and salt. Gradually blend in the sugar, then beat in the egg. Use a handheld electric whisk if you have one.
Into a separate bowl, sift together the flour and the cream of tartar. Gradually add these dry ingredients to your other bowl, stirring well until you have a good malleable dough. Place the dough in the fridge and chill for 3—4 hours.
When your dough is ready, use your hands to shape into
Serve old school with
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