Clean and wash gooseberries. Wash mint, pluck leaves. Mix fruit, vodka, syrup and jam sugar in a large saucepan. Bring to the boil over high heat while stirring.
Add pistachios and mint. Again, let it boil for 3 minutes while stirring continuously. Then pour into carefully prepared glasses and close them well. Results in approx. 4 glasses (from 200ml-300ml content).
Store in a dark and cool place.