Cream the unsalted butter and sugar in a mixing bowl until light and fluffy.
Add pineapple essence or any other flavour, and mix well until combined.
Add the all-purpose flour, vanilla custard powder, baking powder, a pinch of salt, and cardamom powder to a bowl and gently mix them.
Gradually add the dry ingredients and tutti frutti alternatively to the large butter mixture bowl, mixing well after each addition.
Add the finely chopped nuts and mix until evenly distributed.
Finally, add the milk little by little. Continue mixing until the dough comes together.
Divide the dough into two equal portions. Shape both portions into a cylindrical log.
Wrap with a cling wrap and refrigerate the dough for 2 hours. After two hours, remove from cling wrap and slice the dough into circles. Make sure you slice them in medium-sized, uniform circles
Preheat oven to 350F/180C. Line a baking sheet with parchment paper and arrange the sliced cookie dough.
Bake at 350 F degrees for 15 minutes or until lightly golden brown from the bottom. Baking time varies from oven to oven.
Bake them in batches. Let the cookies cool down completely. Transfer them to an air-tight container. Enjoy the eggless fruit biscuits with a hot cup of tea or coffee.