Line a 7 or 8-inch baking tin with parchment paper and set it aside.
Add 1 tsp baking powder to the all-purpose flour or maida and sift it 3 times. Then add the fruits into this flour and mix well. Keep aside for use later.
Into a mixing bowl, add butter and caster sugar. Cream well with an electric beater or a hand whisk until the mixture turns light and creamy. At this stage, add 1/4 teaspoon salt if you are using unsalted butter.
Next, add the 3 eggs one at a time and beat well after each egg. Also, add in the vanilla essence.
Next, add in the flour along with the fruits, little by little, and mix gently with a spatula until all the flour has been incorporated. You can add 2 tbsp of milk to the batter at this stage if you feel that your batter is too thick.
Now, pour the batter into the lined baking tin and spread it evenly with the help of a spatula. Tap the baking tin a couple of times to remove air bubbles, if any.
Place the baking tin in a pre-heated oven, and bake the cake for 35 to 40 minutes at 180° C.
You know that your cake is done, when a skewer inserted comes out clean. Allow the cake to slightly cool and then de-mould it. Cut into slices and serve with a cup of tea or coffee.