San Isidro Labrador - Washed Process - 2025

The V60 recipe for this Costa Rica Gesha runs at 93°C and 420μm — both shifted from a typical light-roast V60 default to account for the variety's characteristics and the 1950m altitude. Gesha is classified as an Ethiopian Landrace variety in Arabica's genetic taxonomy, and its aromatic character depends on volatile esters that extract quickly with heat but degrade if temperature runs too high. The grind is set 80μm finer than default (40μm for light roast density, 30μm for the high altitude, and 10μm for Gesha's delicate aromatics) to compensate for the bean's high density at 1950m, which slows soluble migration through the cell walls. At these parameters, the V60's faster flow rate relative to the Chemex allows slightly more textural complexity to come through — some oils pass the thinner paper, contributing body to the plum and raw honey character without obscuring the marmalade brightness.

The Kalita Wave's flat-bottom design distributes water evenly across the bed rather than funneling it like the V60's cone. This even flow is valuable for a light-roast high-altitude Gesha because it reduces extraction gradients across the bed. The recipe at 93°C and 450μm sits between the Chemex and V60 parameters, with a 1:16–1:17 ratio adding a touch more dilution to keep the delicate plum and marmalade aromatics from concentrating into sharpness. The 80μm finer grind is driven by the light roast's density, the high altitude, and the Gesha variety's aromatic characteristics.

The Clever Dripper operates as an immersion brewer that drains through a paper filter — a hybrid mechanism that matters specifically for a high-altitude light-roast Gesha. Immersion means the grounds are fully submerged throughout the steep, which creates more consistent contact time than pour-over's continuous-drain approach. For a dense, low-solubility bean like this 1950m light roast, that extended, even contact time helps overcome the extraction resistance. The tradeoff is that immersion builds a more concentrated slurry earlier in the extraction, which can slow diffusion as extraction dynamics predicts — the bulk concentration rises faster. The 93°C, 450μm parameters match the flat-bottom pour-overs for this bean, and the immersion mechanism makes this the most forgiving option for the marmalade and raw honey character to develop fully.

The AeroPress recipe for this Costa Rica Gesha drops to 84°C — significantly lower than any other brewer for this bean. That's the combined effect of Gesha's aromatic sensitivity and the AeroPress's inherent pressure compensation. The pressure during pressing raises the effective extraction rate, so lower temperature achieves adequate yield without the risk of thermal degradation of Gesha's fragile volatile aromatics. The grind at 320μm is the finest of any non-espresso method here, which at 84°C compensates for the reduced thermal driving force by maximizing particle surface area. This creates a short 1-2 minute extraction window that, at 1:12-1:13 ratio, produces a concentrated cup showcasing plum and marmalade at elevated intensity. The paper filter keeps the cup clean, preserving the aromatic clarity that defines this Gesha.

The espresso recipe shows a 1:1.9-2.9 ratio — longer than a traditional 1:2 — and that extended pull is deliberate for light-roast Gesha. Light-roast Gesha has low solubility and high density. At 9 bars of pressure, the flow rate through a tightly packed puck of dense, lightly roasted beans will be slower than through a darker roast, which means the machine has more time to extract. The grind is already set 80μm finer than a default espresso to account for this density, matching the fine-direction adjustment used across pour-overs. At 92°C and 170μm, the goal is a shot that reads as bright and fruit-forward — expect plum and marmalade concentrated, with the marmalade bitterness possibly more prominent than in pour-over. Preinfusion is recommended to wet the puck evenly before full pressure, preventing channeling.

The Moka Pot generates roughly 1.5 bar of pressure — well below espresso's 9 bar, but enough to force extraction differently than any gravity-fed method. For a light-roast Costa Rica Gesha at 1950m altitude, the Moka Pot's lower match score of 71 reflects a real challenge: the pressure isn't high enough to overcome the bean's density the way a true espresso machine does, but the shorter contact time at medium-fine grind pushes the cup toward concentrated extraction of surface-level compounds, including acidity. The recipe at 94°C and 270μm (pre-boiled water in the base per Hoffmann's recommendation to avoid cooking the grounds with rising steam) aims to maximize extraction before the heat escalates. The altitude ceiling caps the effective temperature at 94°C rather than the default 100°C, protecting the delicate Gesha volatiles from thermal degradation.

French Press is the lowest-ranked method for this Costa Rica Gesha at 67/100, and the mechanism explains the gap. Immersion without paper filtration means the oils and fines stay in the cup — for a delicate light-roast Gesha, those oils muddy the plum and marmalade character that paper filtration would preserve. The recipe at 94°C and 920μm uses a coarse grind and a 1:14–1:15 ratio that's slightly richer than a standard recommendation to compensate for the light roast's low solubility. The 80μm finer adjustment from default is driven by the light roast, high altitude, and Gesha variety characteristics.