Some of my favorite coffee comes from Guatemala. They are incredibly balanced coffee, yet still acidic and complex. This Coffee from farmer Olga Herrera was one of the first coffees we worked with here at April back in November when we started.
Use a 1:2,2 brew ratio. With all espresso, you first need to identify the size of the filter basket - preferably of the brand VST ridgles - that you are using. We always recommend to dose the same amount of grams as the size of the basket. For this coffee that would be the filter basket size * 2,2, aiming for a target TDS of 8-8,5. Depending on which grinder and set-up your working with the result will be a bit different but the recommended brew time is still between 27 - 32 seconds for this coffee.