Preheat your oven to 180°C/350°F/gas mark 4 and have ready an ungreased baking sheet.
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
Bake in the oven for about 10 minutes, until the cookies are fragrant and golden, then remove and gently transfer them to a wire rack to cool.
Serve old school with
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