A fav from Death & Co. If you don't have ginger syrup (because, really, who does?) you can use a strong ginger beer. And unless it's a very sweet ginger beer, you'll want to add some sugar to make up for the sweetness from the missing syrup.
6 mint leaves
2 oz old overholt rye
3/4 oz lemon juice
1/2 oz ginger syrup
Muddle mint and raspberries. Add everything else. Shake with ice and serve in a highball over ice. If you don't want raspberry seeds in your drink, you'll have to double strain it.