Roaster's Choice Single Origin - Coffee Club Exclusive

This Kerinci, Sumatra honey-processed light roast is built around a contradiction — Indonesian origin at 2,100 meters with intentionally avoided Giling Basah processing. The V60 recipe reflects that complexity: 93°C (honey processing brings a -1°C adjustment) and 445μm grind (a -55μm swing that accounts for light roast density, high altitude, and the Catimor/Bourbon blend's characteristics, including a slight coarsening offset for the variety). The Catimor genetics here — an introgressed Timor Hybrid × Caturra derivative — are notable because Catimor requires the slowest development among all cultivar groups at roasting, and its Robusta ancestry can introduce herby, roasty character if underroasted. Light roasting this variety is a deliberate gamble. The grind at 445μm is set to balance the introgressed variety's different bean structure — slightly coarser than pure Ethiopian heirloom would call for, to avoid earthiness from over-fine extraction. The V60's paper filter manages the CGA brightness by trapping insoluble oils that would otherwise amplify the bitterness.

At 475μm and 93°C, the Kalita Wave recipe for this Indonesian honey-processed Bourbon/Catimor blend mirrors the V60 with a fractionally leaner 1:16.5 ratio. The Kalita's flat-bottom three-hole design distributes pour water evenly across the bed — relevant here because honey-processed beans from Kerinci's mucilage-drying protocol may produce a less uniform particle distribution than washed beans, with some particles carrying residual dried mucilage that affects water absorption during the bloom. The Kalita's pooling behavior gives those mucilage-coated particles additional wetting time before the drain opens, pulling the horchata caramelization sweetness more completely than a V60 pourover's faster drainage would allow. The slightly leaner ratio at Kalita (1:16.5 vs. V60's 1:15.5) compensates for the added immersion time — you need slightly less coffee to hit the same TDS when contact time extends even marginally.

The AeroPress recipe drops to 84°C for this Indonesian honey-processed light roast — the same logic as other honey-processed light roasts, but with an additional consideration: the Catimor genetics in this blend include Robusta ancestry, which means slightly more robusta-associated bitter compounds like bitter compounds associated with Robusta ancestry relative to pure Arabica varieties. At 345μm with short immersion (1-2 minutes), the lower temperature selectively extracts the citra-hop brightness and pomelo citric notes while leaving the heavier Catimor-associated bitter compounds behind, which extract later in the extraction order and more readily at higher temperatures. The AeroPress's mechanical pressure completes extraction efficiently even at 84°C. At 1:12.5 ratio, the horchata sweetness becomes more concentrated — the caramelization-derived caramel compounds that create the creamy, rice-milk impression of horchata read more clearly at higher TDS than at the pour-over dilution levels.

The Clever Dripper's hybrid approach — immersion steep followed by paper-filtered drain — is well-suited for this Kerinci honey-processed light roast. The immersion period gives the Bourbon fraction (which roasts slower and needs more contact time than Catimor) adequate extraction while the paper filter traps the Catimor-origin herby compounds that French press would pass. At 475μm and 93°C, the parameters match the Kalita closely, appropriate because both methods use similar paper filtration with some immersion character. The key distinction is that the Clever allows you to control steep time precisely before opening the drain valve — for this bean, a 3-minute immersion before draining captures the citra-hop brightness and pomelo citric character cleanly, with the extended drain phase pulling the remaining horchata caramelization sweetness as water velocity slows through the bed. The 1:15.5 ratio provides enough TDS that the pomelo note clears its sensory threshold.

This Kerinci Bourbon/Catimor honey-processed light roast at 2,100m is a challenging espresso proposition — light roast beans resist extraction at normal espresso parameters. The recipe uses 92°C and a 1:2.4 ratio, both biased toward higher extraction to compensate for the bean's very high density (2,100m altitude) and low solubility (light roast). At 195μm, the grind is slightly coarser than typical light espresso, reflecting the Catimor genetics: that variety's Robusta ancestry produces a slightly different cellular structure that can contribute earthiness if over-extracted through too-fine a grind. The longer ratio means you're pulling more water through the puck, which extends the extraction window beyond where the citra-hop bitterness and pomelo brightness dominate and into the horchata sweetness register. Preinfusion — wetting the puck at low pressure before full 9-bar extraction — is essential for this dense, high-altitude bean to prevent channeling.

The moka pot recipe for this Indonesian honey-processed light roast runs a -6°C delta from the typical 100°C moka default, landing at 94°C. The honey processing accounts for a 1°C reduction, and the altitude ceiling caps the temperature at 94°C. Using pre-boiled water is the most important moka technique adjustment — it prevents the grounds from overheating during the slow steam-pressure buildup before brewing begins. With Catimor genetics, the moka pot's heat application profile is particularly important: this variety has Robusta ancestry and can produce earthiness if prolonged exposure to rising steam over-extracts the heavier compounds. Pre-boiling water and using medium-low heat means extraction happens quickly once brewing starts, capturing the brightness and pomelo character before the heavier compounds extract. At 295μm, the grind is tuned for the moka pot's low pressure.

French press is a poor fit for this bean (72/100) primarily because the metal mesh allows the Catimor genetics' minor herby, roasty undertones to pass directly into the cup as insoluble oil-bound aromatic compounds. The paper-filtered methods suppress these through filtration; French press cannot. At 945μm and 94°C, the grind is coarser and temperature slightly higher than for the pour-overs — immersion brewing compensates for the reduced surface area through longer steep time. This bean still grinds finer than a standard French press default despite the coarse setting, reflecting the light roast and altitude demanding more extraction surface area. The 4-8 minute steep window is critical: at 4 minutes you'll get the citra-hop brightness and pomelo clearly; approaching 8 minutes brings more of the horchata sweetness but also more of the Catimor-ancestry earthiness that the longer steep can extract from the coarse, oil-rich grounds.