Add a splash of fruit to your cocktail. Because of the sweetness of the watermelon this margarita doesnt need much sugar, so one glass has only 105 calories. A little bit of fresh lime. One of my favorite things is Watermelon, its so refreshing and delicious. One of my other favorite things is margaritas So, it was a given that I needed to. Juicy watermelon is paired with fresh mint and lime zest for refreshing sweetandtart blend. And, of course, you cant forget the tequila WatermelonTequila Cocktail refreshing and amazing cocktail recipe with fresh watermelon, tequila, lime juice and mint, takes 15 mins. A margarita is a cocktail consisting of tequila, triple sec, and lime or lemon juice, often served with salt or sugar on the rim of the glass. The drink is served. Many years ago when I was single and living by myself it would not be uncommon to see a giant watermelon in my shopping cart. Sure I could have purchased the precut. Frozen Watermelon Margaritas Recipe. Brigole here.