1 1⁄2 oz Vodka
1 1⁄2 oz Dry vermouth, Noilly Prat
4 dr Celery bitters, Fee Brothers
1⁄2 oz Genepy, Dolin Genepy des Alpes
6 oz Soda water
1 sli Green Onion
Instructions
Build in Collins Glass, over ice, add soda water last