Place the cranberries, raspberry liqueur, sugar, ginger, mint and salt in a saucepot, saving the fresh raspberries for later. Heat the pot to medium heat and simmer for about 10 minutes, stir the cranberries every few minutes.
Once the cranberries have popped and a sauce has formed, add the fresh raspberries. Stir and simmer another 5 minutes, until the raspberries have just cooked through. Serve warm or cold.
