1 part Lemon juice
2 part Simple syrup (rosemary-infused)
4 part Sweet vermouth, Martini & Rossi
1 ? Water (hot; to taste)
Instructions
Use a glass or ceramic mug. Build everything but the hot water, then add as much hot water as you'd like, depending on taste. No garnish yet...maybe lemon zest or a lemon twist.
Notes
I used Martini & Rossi, but I bet it would be good or even better with a different brand.
History
Based on the hot toddy; created because I wanted something hot and boozy to drink