Roast 1 tbsp. grated coconut in a pan without fat, remove and let it cool down. Peel bananas and cut into pieces. Puree finely with coconut milk, 1 tbsp. grated coconut and sugar in a blender. Season to taste with cardamom
Pour the shake into 4 glasses, fill each with 25 ml espresso coffee. Sprinkle with roasted coconut flakes and serve immediately