In a big bowl add flour, bicarbonate soda, cream of tartar, butter along with caster sugar and mix.
While mixing keep adding some buttermilk, bring it all together, forming dough and take it out on a board.
Sprinkle some flour on the board and pat the dough to the thickness of your choice.
Cut small pieces of the dough with the cookie cutter and place them on a baking tray.
With the help of a brush touch up the pieces with the beaten egg.
Bake in an oven set at 220degree for about 10-12 minutes.
To Serve: Server the scones with some whipped cream and strawberry jam on the side.
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Key Ingredients: all purpose flour, cream, butter, castor sugar, buttermilk, egg, baking soda