| Ingredient | Quantity |
|---|---|
| Aromatic bitters | 0.5 oz |
| Fresh lemon juice | 1 oz |
| Simple syrup | 0.5 oz |
| Vodka | 2 oz |
| Add a splash of grapefruit juice for a zesty finish |
| Use gin instead of vodka for a more herbal complexity |
| Rim the glass with sea salt to enhance the sour profile |