Going for a basic (Lime) margarita flavor profile.
After mashing, raise temp to boiling for a few minutes, and then chill to around 100°. Use 88% Lactic Acid to pre-sour down to pH ~4.5, before pitching a lacto strain to kettle sour. I prefer a Goodbelly shot for Lacto Plantarum, or OYL-605. Hold temp (if you can) for around 24 hrs, or until pH ~3.3-3.5.
Bring to a boil for 10 min, adding hops, salt, and coriander (can use less or no hops, or other varieties). Chill and pitch clean yeast (Chico, Kölsch, German Ale, etc). While fermenting (~2 weeks), zest 4 small limes and add to 1/2 cup tequila. Separately, also add 2 toasted oak cubes to 1/4 cup tequila. When kegging/bottling, add tincture liquids (discard zest and cubes) to taste.
My efficiency was lower than planned, so I added wheat DME to raise the OG. Ideally shoot for all grain (though I’ve made award winning Goses with all DME, so don’t worry about it if you have to add some!)...