This recipe takes its inspiration from the Anejo Highball recipe (albeit purely inspiration).
The Anejo Highball (as previously posted) is as follows:
1.5 measures Anejo Rum
½ measure fresh lime juice
½ measure dry curacao/triple sec liqueur
2-4 dashes Angostura Bitters
Top up with Ginger Beer
Lime/orange wheel slices to garnish.
The Tequila Highball recipe is, however, slightly different;
1.5 measures Gold Tequila (preferably Anejo, but Reposado will do)
½ measure fresh lime juice
½ measure dry curacao/triple sec liqueur
1.5 measures Pink Grapefruit Juice
1 measure Peach Schnapps
Top up with Grapefruit Soda
As you can see this is very much a Mexican themed drink, but coming from a Caribbean train of thought. Using the lime for the same reasons the rum version does, to help cut through the taste of the alcohol but using the Grapefruit juice to help blend the otherwise Margarita style concoction with the Peach Schnapps. And topping up with grapefruit soda purely lightens the up the drink (without losing the flavours).
This is very similar to the thought process I went through for the Mexican themed party (see my previous blog: http://theferventshaker.wordpress.com/2012/11/28/the-songwriters-shindig-south-of-the-border/) and the use of grapefruit soda along with grapefruit juice blends in well with the Mexican theme of this drink.
A side note; the Schnapps in this particular recipe, for all intents and purposes, is Peach flavoured, but you can substitute your favourite flavour if you do not like peach.
The Fervent Shaker 