Penyemprot Jeruk Nipis Grapefruit

Bahan-bahan (2 porsi)

• 1 large grapefruit ((juiced // 1 large yields ~1 cup))
• 2 Tbsp fresh lime juice
• 3 ounces vodka ((3 ounces = 6 Tbsp) )
• 1 1/2 ounces triple sec ((1 1/2 ounces = 3 Tbsp) )
• 1/2 cup tonic water
• 6 -8 ice cubes ((plus more for serving))