Blend the white rum, coconut feni, syrup and lime juice, and pour it in the now chilled glass.
Serving: Serve it chilled, with a slice of lime.
If you don't have the syrup, use the recipe for piña colada found here — please do away with the palm jaggery or sugar and reduce the quantity of coconut cream by more than a half.
Increase each serving proportionately to make an additional cocktail. I don't know if Cabo, or cashew feni is available outside of India. If they are, let me know okay? If it isn't available where you stay and you still want to try Cabo Colada, why don't you try it with Malibu, the Caribbean rum? A double shot of it if you can't get your hands on coconut feni as well.