I love grapefruit soda but I hate all the garbage that is usually in them... artificial sweeteners or high fructose corn syrup, various preservatives, esther of wood rosin, brominated vegetable oil... just gross! So... when I am in the mood for a deliciously fresh tasting and still easy to make paloma without all the garbage, it goes something like this:
2oz Tequila Blanco
juice of half a lime, or about .5oz (optional but delicious)
2oz fresh Ruby Red Grapefruit Juice
3 tablespoons agave nectar
4 oz club soda
Mix everything EXCEPT the club soda in a shaker with ice, shake well, pour into a large highball glass or tumbler, add club soda and ice to fill glass, stir gently and enjoy!
Trust me, after you try your palomas this way, you'll never go back to the canned stuff. Its like the difference between bottled margarita mix and a real margarita.
**NOTE: After a few more tastings, I've decided to revise my amounts a little... I think the way I had it was a little heavy on the grapefruit and needed a touch more agave. The amounts now shown reflect the correct amounts for improved flavor.