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The Professor is citrus summer cocktail of orange, lime and grapefruit flavors. Served in a globe glass with sliced oranges and limes it makes the perfect summer cocktail.

Tequila and Grapefruit Cocktail -"The Professor"

The Professor is a citrusy cocktail featuring the flavors of oranges, limes and grapefruit. This delicious cocktail is perfect for sipping by the pool, on the beach or just sharing with friends.
5 from 3 votes
Prep Time 10 mins
Total Time 10 mins
Course Drinks
Cuisine American
Servings 6
Calories 107 kcal


  • 24 oz Grapefruit soda such as Fresca, Squirt or other sugar free grapefruit soda
  • 4 oz Tequila
  • 4 oz Grand Marnier
  • 4 oz Lime juice fresh squeezed
  • Ice
  • Oranges and Limes for garnish, optional


  • Mix all of the ingredients in a Pitcher. Add ice, stir and serve over ice. Garnish with limes and oranges (optional).


I recommend using Fresca, Squirt or another non-calorie grapefruit flavored soda.  The added sugar from a regular soda may make this too sweet and it will alter the nutritional values of this drink.


Serving: 6gCalories: 107kcalCarbohydrates: 8gProtein: 1gFat: 1gSaturated Fat: 1gSodium: 2mgPotassium: 28mgFiber: 1gSugar: 6gVitamin A: 9IUVitamin C: 6mgCalcium: 3mgIron: 1mg
Keyword citrus, grapefruit, tequila, grand marnier, orange, lime, grapefruit soda, citrus soda, Squirt
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