Begin by gently rinsing the fresh raspberries and strawberries under cool water. Pat them dry with a clean towel.
In a large pitcher, combine the raspberries and sliced strawberries. Use a wooden spoon to lightly muddle the fruits to release their natural juices.
Add the coconut milk, ground cardamom, and water to the pitcher. Stir well to mix all the ingredients.
Allow the infused water to rest in the fridge for at least 15 minutes; this allows the flavors to meld together beautifully.
When ready to serve, fill glasses with crushed ice and ladle the infused water over the ice.
For an added touch, garnish each glass with a fresh mint leaf, if desired. Enjoy chilled or warm, as per your preference!