First Preheat oven to ( 180 C )
Next take a bowl and sift all dry ingredients flour, salt, baking soda.
In another bowl beat butter and sugar until fluffy and light.
Add the yogurt and sour cream slowly till well combined.
Whisk yogurt and sour cream gently before adding to get uniform consistency.
Add lime zest and lime juice, beat till combined well.
Fold in the blueberries.
Grease a cake pan or a loaf pan 9×5 and dust well with flour, tapping out excess flour.
Spoon the batter into the pan, top with sprinkles of pistachio flakes and bake till the toothpick inserted to check the cake comes clean
Now prepare a lime syrup by adding 1/3 cup lime juice and 1/3 cup sugar to a small pan. Heat till sugar dissolves. Remove and set aside.
Prick the top of the warm cake , using a pastry brush , spread the lime syrup all over and let it soak up. Repeat twice.
Sprinkle the pistachio flakes.
Let the cake cool completely, make a lime glaze by combining 2 tbsp of lime juice with 1 cup powdered sugar.
Whisk till smooth. The syrup should be thick enough to pour .So make the syrup to a pour able consistency.
Adjust with sugar to get the right thickness.
Drizzle over top of the cooled cake.
Slice when cake is completely cooled.
Enjoy a slice with tea!!