Combine the heavy cream, milk and sugar, and heat. Don't let it come to the boil.
Dissolve the gelatin over a double boiler, and add to the mixture from Step 2. Mix well.
Add the rum.
When it has cooled so it is warm to the touch, pour it into glasses containing the lychee, and leave it in the fridge for 1-2 hours to finish!
Story Behind this Recipe
I received some canned lychee. Rather than just eating them as-is, I thought adding them to panna cotta would bring out their gentle flavor. I made the panna cotta runnier than usual by adjusting the ingredients. For normal panna cotta, use equal amounts of heavy cream and milk.
This panna cotta is slightly runny. Let it chill in the fridge for 3 hours. If you'd prefer it to be firmer, reduce the amount of milk to 150 ml.