Juice the citrus: Squeeze the orange and lemon into a small bowl or directly into a shot glass.
Grate the ginger and turmeric: If using fresh, finely grate to release their juices.
Mix the ingredients: In a small bowl or shaker, combine the citrus juices, ginger, turmeric, black pepper, honey, and cayenne (if using). Add water if you prefer a milder flavor.
Stir or shake: Mix well until the honey is completely dissolved.
Serve immediately: Divide the mixture into two shot glasses and enjoy the zing!