If desired, for the perfect salt rim you can liquidise or grind sea salt to make it finer, then run a cut slice of lime (or orange) around the outside...
Chris, ever since I discovered Cascahuin Blanco, I want no other. I agree, this is the winner. This recipe is similar to my own, which is 50-25-20-5, plus some saline. There's something about that little bit of agave that just seals the deal. Salud!
Glad to see that. I will say, seeing that you're American, you can get many as good, if not better Tequilas than Cascahuin. Some recommendations: Fortaleza, G4, Terralta, Cascahuin Tahona and other non standard editions, Wild Common, Volans, El Gran Legado de Vida, Siembra Valles, ArteNOM Blancos, Atanasio, Siempre, Lalo, Don Fulano, Cazcanes, Tapatio 110 Proof and Amatitena.
I just read an article (I think on PUNCH website) which pointed me to the tastetequila.com site. Most of these brands you mentioned are listed on their 'additive-free' guide. I think I've seen a few of them at my local go-to shop. But jeez that article made me want to dump the junk tequila I use for cocktail testings. Could be my mind playing tricks, but I can (not not) taste the artificiality of it now. And, no sir, I don't like it.