Market Lane Coffee

Las Alasitas

panama light roast washed gesha
white peachorange blossomtoffee

Washed Gesha from a small family farm at 1,642 meters puts this lot at the heart of what the variety does best: translating altitude and terroir into aromatic precision without the interference of fruit fermentation. At 1,642 meters, cherry development slows enough that the plant accumulates significant organic acid precursors and aromatic compounds in the seed. Altitude accounts for roughly 25% of variation in extraction yield — the density built at elevation concentrates solubles, meaning more of the good material extracts before water starts pulling the bitter, astringent compounds in the slow phase of extraction. Washed processing clears the frame. Depulping and fermenting in water tanks removes fruit mucilage, stripping away the volatile esters that natural or honey processing introduces. The white peach and orange blossom notes are entirely Gesha's own chemistry. White peach maps to malic acid — the crisp, stone-fruit acid that, while typically below its individual sensory detection threshold, interacts synergistically with citric acid to push perception toward soft, ripe fruit rather than sharp brightness. Orange blossom is phenylacetaldehyde, produced when phenylalanine breaks down through Strecker degradation during roasting — the defining honey-floral compound in Gesha aromatics. The toffee note is Maillard territory. At light roast, amino acids and reducing sugars produce caramelly, nutty compounds before the roast moves into the heavier, darker Maillard products. And while sucrose is essentially 100% consumed during roasting, perceived sweetness still rises through light-medium development — because caramelization products like maltol and furanones create olfactory sweetness that the brain registers as if it came from sugar. Gesha's large bean size and low yield variety character means each lot is a relatively scarce expression of the variety's full aromatic potential. The [varietal](/blog/coffee-varietal-guide) traits are the story here — washed processing just gets out of the way.
Chemex 6-Cup 95/100
Grind: 500μm Temp: 93°C Ratio: 1:15.0-1:16.0 Time: 3:30-4:30

Washed Gesha's defining aromatic character — the honey-floral notes from floral aromatics and the malic-citric stone fruit (white peach) — is maximally expressed when oils and insoluble fines are removed from the cup. The Chemex's thick bonded paper filter is the optimal mechanism for this, and the 95/100 match score reflects that alignment. At 93°C (1°C below the standard 94°C default — a Gesha-specific temperature reduction to protect volatile aromatics), extraction proceeds at a pace that doesn't rush the aromatic phase of dissolution. The 500μm grind is 50μm finer than default, driven by the light roast's reduced solubility and Gesha's dense, fragile aromatic structure that benefits from the additional surface area. Gesha's toffee sweetness (Maillard caramel-range products) and white peach notes only integrate when extraction reaches past the fast-extracting sour acids without pushing into polyphenol territory — and the Chemex's clean filtration ensures that balance reads clearly.

Troubleshooting
sour: Grind finer by ~22μm and raise temp by 1°C. Gesha at light roast from 1,642m has high bean density and the delicate aromatic variety profile means sour extraction is particularly disruptive — it masks the orange blossom phenylacetaldehyde behind aggressive citric sharpness. Extend bloom to 50-55 seconds.
thin: Increase dose by 1g or reduce water by 15g; swap to a metal filter if body is the primary concern. Gesha's WCR 'low yield' classification means low agronomic production and dense beans — the Chemex paper filter compounds the body limitation by stripping oils. Dose adjustment preserves aromatic clarity better than filter swap.
Hario V60-02 87/100
Grind: 450μm Temp: 93°C Ratio: 1:15.0-1:16.0 Time: 2:30-3:30

The V60 recipe for Las Alasitas runs at 93°C — 1°C below default. That single degree matters for Gesha: floral aromatics (orange blossom) is a volatile aromatic compound with a relatively low boiling point, and the higher the slurry temperature, the faster it dissipates from the cup. The V60's open-sided cone allows volatile aromatics to rise freely during brewing — cooler temperature slows that dissipation rate and keeps more of the floral character in the liquid rather than escaping as steam. At 450μm, the grind is 50μm finer than a standard light roast V60 default. Gesha beans are classified as 'large' size by WCR, which produces a wider particle distribution at any given grind setting — the finer compensating grind ensures enough small particles are present to achieve proper extraction rate without relying on the largest particles to carry too much load.

Troubleshooting
sour: Grind finer by ~22μm and raise temp by 1°C (to 94°C). V60 flow rate is the compounding variable here — if your drawdown is under 2 minutes, grind is too coarse and contact time too short. Gesha's large bean size can produce uneven extractions if particle size distribution is wide.
thin: Increase dose by 1g or reduce water by 15g. Metal filter mesh on a V60 recovers oils stripped by paper. Gesha's low yield variety character (WCR) translates to dense beans with limited available solubles at light roast — dose is the primary TDS lever.
Kalita Wave 185 86/100
Grind: 480μm Temp: 93°C Ratio: 1:16.0-1:17.0 Time: 3:00-4:00

The Kalita Wave recipe for Las Alasitas matches the V60 temperature (93°C) and shares the 50μm finer grind at 480μm. The Kalita's flat-bottom geometry is particularly forgiving for Gesha's large, somewhat variable bean size — the flat bed distributes water across all particles without the cone-geometry channeling risk that a V60 faces with a wide particle distribution. At a 1:16.5 ratio (center of 1:16-1:17), the recipe is slightly more dilute than the Chemex formulation, a reasonable trade-off for the Kalita's longer dwell time. For Gesha, the toffee Maillard notes and white peach malic character are enhanced by even extraction — the Kalita's design tolerates minor grind inconsistencies better than other pour-overs, meaning the orange blossom and white peach notes are more consistently reproducible across brews, even if peak expression is slightly lower than the Chemex's best result.

Troubleshooting
sour: Grind finer by ~22μm and raise temp by 1°C. Don't pour on Kalita filter walls — collapsed waves create fast channeling paths. Gesha from 1,642m is dense enough that insufficient contact time produces noticeably sour cups; the Kalita's design helps but only if filter integrity is maintained.
thin: Increase dose by 1g or reduce water by 15g. A metal filter swap recovers body the Kalita paper removes. Gesha's low agronomic yield and large bean size both contribute to lower-than-expected extraction TDS — dose adjustment is more impactful than water reduction.
Clever Dripper 80/100
Grind: 480μm Temp: 93°C Ratio: 1:15.0-1:16.0 Time: 3:00-4:00

The Clever Dripper ranks fourth for Las Alasitas primarily because immersion brewing holds volatiles in the cup longer than continuous-pour methods, but the tradeoff is that volatile loss during steeping is cumulative rather than brief. Gesha's orange blossom aromatics character is delicate — a 3-4 minute immersion at 93°C dissipates more of it than a 3:30 drawdown through a Chemex. The grind at 480μm and the 93°C temperature compensate partly, keeping the extraction rate high while limiting thermal volatile loss. The key advantage the Clever offers is extraction consistency: for brewers less comfortable with continuous pour technique, the valve-controlled steep produces more repeatable results, and a repeatable well-extracted cup is better than a theoretically optimal but technique-variable cup. The paper filter protects Gesha's aromatic clarity from lipid interference.

Troubleshooting
sour: Grind finer by ~22μm and raise temp by 1°C. Extend steep to 3:30-4 minutes before releasing the valve. Gesha from Panama at light roast needs maximum contact time in the Clever's immersion environment — the valve advantage is wasted if you release too early.
thin: Increase dose by 1g or reduce water by 15g. The Clever's paper filter removes body-contributing oils — for Gesha's already low-yield bean structure, this can produce thin cups at correct recipe parameters. Dose up rather than reducing water to preserve aromatic concentration.
AeroPress 79/100
Grind: 350μm Temp: 84°C Ratio: 1:12.0-1:13.0 Time: 1:00-2:00

The AeroPress recipe for Las Alasitas drops to 84°C — the lowest temperature across all brewers for this bean, 9°C below the Chemex. That aggressive temperature reduction serves two purposes: it limits bitter compound extraction via the Noyes-Whitney equation (lower temperature = lower diffusion coefficient and lower saturation concentration for bitter Maillard distillates) and it protects the most volatile of Gesha's aromatic compounds from thermal dissipation. At 350μm (50μm finer than a standard light-roast AeroPress default), the fine grind and short 1-2 minute contact compensate for the lower temperature's reduced extraction rate. Full immersion plus pressure assist means the white peach and floral notes can reach the liquid despite the gentle thermal environment. This is a compelling recipe for brewing Gesha if you want maximum aromatic intensity in concentrate form, especially with a small bypass pour of hot water after pressing.

Troubleshooting
sour: Grind finer by ~22μm and raise temp by 1°C (to 85°C). At 84°C, extraction rate is deliberately lower — sour results from this method usually mean steep time is too short. Extend by 20-30 seconds before pressing, and agitate gently during the steep to ensure full saturation.
thin: Increase dose by 1g or reduce water by 15g. Swap to metal AeroPress filter to recover oils stripped by paper. Gesha at 84°C and light roast has limited extraction efficiency — the pressure helps but TDS can still run low; dose adjustment is the most direct lever.
Espresso 76/100
Grind: 200μm Temp: 92°C Ratio: 1:1.9-1:2.9 Time: 0:28-0:35

Light-roast espresso with Las Alasitas carries an explicit expectation: bright, acidic, fruit-forward shots with the floral and white peach translating into an aromatic, high-acidity concentration. At 92°C (1°C below standard, a Gesha-specific variety reduction), and 200μm (50μm finer than a medium-roast Gesha baseline), the shot parameters favor slow, thorough extraction through a dense puck. The 1:2.4 ratio (center of 1:1.9-1:2.9) is longer than a classic espresso ratio, giving the light roast enough volume to develop past the early sour extraction phase. Gesha espresso is divisive among traditionalists — the aromatic, tea-like quality doesn't read as 'espresso' to Italian-style sensibilities — but for specialty espresso brewers who value aromatic complexity over Maillard-forward body, a well-extracted Las Alasitas shot is exceptional. Dialing in takes patience with this dense bean.

Troubleshooting
sour: Grind finer by ~10μm and raise temp by 1°C (to 93°C). Extend preinfusion to 8-10 seconds. Gesha espresso at light roast requires the most patience in the batch — sour shots mean the dense high-altitude bean hasn't extracted through the early acid phase. Verify shot time is in the 28-35 second range before adjusting parameters.
thin: Reduce yield by 5g (pull toward 1:1.9 ratio) or increase dose by 1g. Gesha's large bean size means it grinds to a broader particle distribution, which can produce higher channeling risk and lower TDS. Ratio adjustment is more reliable than dose changes for consistency.
Moka Pot 71/100
Grind: 300μm Temp: 99°C Ratio: 1:9.0-1:10.0 Time: 4:00-5:00

Las Alasitas scores 71/100 for Moka Pot — among the lower matches for this bean. The Moka Pot's pressure (~1.5 bar) and high-temperature environment (99°C, near full boiling, with the Gesha variety's -1°C applied to pre-boil water) produce a concentrated cup where Gesha's most delicate volatile aromatics — particularly the floral compounds — are at risk of thermal degradation. The 300μm grind (50μm finer than a medium-roast default) compensates for the light roast density but the Moka Pot's limited pressure means contact time is the primary extraction mechanism. Pre-boil water at 99°C (not 100°C) to limit steam-path heating of the grounds during extraction. Remove from heat immediately at the first sputter — a light roast Gesha can transition from bright and aromatic to flat and bitter in the 15-20 seconds of continued sputtering.

Troubleshooting
sour: Grind finer by ~22μm. Pre-boil water ensures stable extraction temperature from the start. Sour Moka Pot output from this Gesha means extraction stopped in the fast-acid phase — at 1.5 bar with a light roast, grind surface area is the primary extraction lever.
thin: Fill the basket to capacity without tamping. Increase dose by 1g if your basket design allows. Gesha's low agronomic yield and density means thin Moka Pot output is common — TDS is limited by available solubles at light roast, not by incorrect technique.
strong: Reduce dose by 1g or increase lower chamber water by 15g. Reduce heat to slow the extraction rate. Over-strong Gesha in the Moka Pot risks masking the orange blossom and white peach notes behind concentrated bitterness — the 1:9.5 ratio is already concentrated, so minor water additions make meaningful TDS differences.
French Press 67/100
Grind: 950μm Temp: 95°C Ratio: 1:14.0-1:15.0 Time: 4:00-8:00

The French Press ranks seventh for Las Alasitas at 67/100, primarily because the metal filter allows oils and fines to pass into the cup. For Gesha's delicate aromatic profile, this creates a mouthfeel-flavor mismatch: the white peach and floral characteristics are most expressive when the cup is clean and clarified, and the full-immersion oils add a weight that subdues the aromatic lift that makes Gesha distinctive. At 950μm and 95°C (1°C below the 96°C default, reflecting the Gesha variety's sensitivity to heat), the recipe compensates for light roast density with the full 4-8 minute steep window. If using the French Press with Las Alasitas, follow Hoffmann's extended-wait method — steep 4 minutes, then wait 5-8 additional minutes after pressing for grounds to settle before pouring. This produces the cleanest possible French Press result and minimizes the fines interference that would otherwise cloud the aromatic expression.

Troubleshooting
sour: Grind finer by ~22μm and raise temp by 1°C. Steep the full 8 minutes and use the extended-wait technique after pressing. Light-roast Gesha in the French Press needs maximum immersion time — the metal filter passes oils but cannot compensate for insufficient extraction time.
thin: Increase dose by 1g or reduce water by 15g. Thin French Press output from Gesha is a TDS problem — the metal filter passes oils, so if the cup reads as watery rather than light-bodied, the extraction itself is insufficient. Dose adjustment is the correct fix.
Cold Brew Flash Brew Recommended

Cold brew is not recommended for this bean. At near-freezing temperatures, cold water cannot extract the complex acids, delicate aromatics, and bright fruit compounds that define a light-roasted coffee — they remain locked in the cell matrix. For a cold version of this coffee, use flash brew: brew a concentrated pour-over (V60 or Chemex at 60% of the normal water volume) directly over ice in the server. The hot water extracts the full flavor spectrum, and the rapid ice cooling locks in volatiles that would otherwise evaporate during a slow cool-down.