Market Lane Coffee

Ichuga

kenya light roast washed sl28, sl34, ruiru_11, batian

cranberrydried apricotsweet lime

Cranberry is an unusual tasting note for coffee. Most red fruit descriptors in specialty — raspberry, strawberry, cherry — trace to esters and organic acids that are common across origins. Cranberry is different. It implies a specific balance: high acidity, moderate sweetness, and an astringent finish. In this cup, that balance comes from the interaction between citric acid, phosphoric acid, and the chlorogenic acids preserved by the light roast. Citric acid provides the bright, tart front. Phosphoric acid adds the sparkling quality underneath — a sweet-sour effervescence that keeps the acidity from reading as sharp or harsh. Both acids are present above their sensory detection thresholds. The dried apricot note is the contribution of malic acid, which reads as smooth stone fruit and rounds out the acid profile. Three distinct acids, each above threshold, each contributing a different character. That is what 1750m of elevation and washed processing can produce. Nyeri sits on the slopes of Mount Kenya, and the farms supplying Ichuga washing station grow SL28 and SL34 — two varieties selected by Scott Agricultural Laboratories in the 1930s specifically for cup quality. SL28 is a Bourbon-lineage variety rated exceptional for flavor. SL34 descends from Typica. Both are tall, low-yielding, and disease-susceptible. They survive in Kenyan specialty because they taste better than almost anything else. Ruiru 11 and Batian are the practical additions. Ruiru 11 is an F1 hybrid with Robusta ancestry — disease-resistant but lower cup quality. Batian carries SL28, SL34, Rume Sudan, and Timor Hybrid genetics. In a cooperative lot like this, all four varieties are blended at the washing station. The SL28 and SL34 carry the acid complexity. The hybrids add volume. Sweet lime is the last listed note, and it circles back to the acid story. Lime character without harshness means the roaster developed enough Maillard browning compounds — furanones, maltol — to create an olfactory counterweight to the acidity. Your nose perceives sweetness. Your tongue tastes acid. The cup reads as sweet lime.

Chemex 6-Cup 96/100

Grind: 490μm Temp: 94°C Ratio: 1:15.0-1:16.0 Time: 3:30-4:30

Kenya SL-28 and SL-34 are the benchmark for phosphoric acidity in specialty coffee — the cola-brightness quality that gives Kenyan lots their distinctive, almost sparkling character. The Chemex's thick bonded paper filter is ideal here not just for clarity but because it controls exactly how much of that intensity reaches the cup. At 94°C with a 490μm grind (60μm finer than default), extraction must be thorough — the light roast's lower solubility drives the primary grind reduction, and the dense, high-quality Kenyan profile demands the additional surface area to extract fully. Kenyan SL acids are aggressive when underextracted, turning cranberry brightness into astringent sourness, and the Chemex's extended contact time through its thick filter helps avoid that trap. At 1:15.5 ratio, the Chemex delivers enough TDS for the dried apricot's malic character and sweet lime's citric note to read as integrated rather than disjointed.

Troubleshooting

sour: Grind finer by ~22μm and raise temp by 1°C. SL-28 and SL-34 have some of the highest acidity potential in specialty coffee — stop short of full extraction and that cranberry note becomes aggressive astringent sourness. Ensure bloom time is at least 45 seconds to degas the dense light-roast bed.

thin: Increase dose by 1g or reduce water by 15g; alternatively swap to a metal filter. Kenyan light roasts at high altitude (1,750m) have low solubility — the Chemex's thick paper can compound this by stripping body-contributing oils. Dose adjustment is more reliable than filter swap for the SL variety profile.

Hario V60-02 88/100

Grind: 440μm Temp: 94°C Ratio: 1:15.0-1:16.0 Time: 2:30-3:30

The V60 is where SL-28 and SL-34's brightness can either shine or overwhelm, depending on technique. For a light-roast Kenyan, the grind stays at 440μm — finer than a typical Kenyan at medium roast would call for, but appropriate for a light roast where bean density at 1,750m limits solubility. The V60's fast drawdown characteristic (relative to Kalita or Clever) means the brew must extract aggressively during contact — the aggressive pour technique (continuous pour with swirl after bloom) matters more here than with low-acid beans. The cranberry note is phosphoric and citric acid compound; the dried apricot maps to malic acid character. For these to integrate rather than spike as sourness, the V60 needs a well-controlled, non-rushed pour that keeps water at consistent contact with the finely ground bed throughout the 2:30-3:30 window.

Troubleshooting

sour: Grind finer by ~22μm and raise temp by 1°C. SL-28 and SL-34's signature intensity becomes aggressive sourness when underextracted. If your V60 pulls fast (under 2:30), the grind is too coarse — the SL variety's larger bean size and harder structure means it resists extraction more than typical Kenyans.

thin: Increase dose by 1g or reduce water by 15g. A metal mesh insert recovers some oils the V60 paper filter removes. At 1,750m light roast, Kenyan SL beans have lower available solubles than you'd expect from their reputation — the recipe already compensates, but low-TDS cups may need further dose adjustment.

Kalita Wave 185 88/100

Grind: 470μm Temp: 94°C Ratio: 1:16.0-1:17.0 Time: 3:00-4:00

The Kalita Wave's flat-bed geometry distributes water evenly across the entire coffee bed, which is particularly valuable for a Kenyan SL lot. SL-28 is classified as a large-bean variety by WCR, and SL-34 likewise — large beans grind less uniformly than smaller varieties, producing a wider particle size distribution. The Kalita's design tolerates this distribution better than the V60's cone geometry, where uneven particles create flow channels. The 470μm grind (60μm finer than default) still compensates for light roast and altitude density. For a light-roast Kenyan, the extraction intent is clear: the 1:16.5 ratio skews slightly weaker than the Chemex recipe to accommodate the Kalita's longer dwell, preventing over-concentration of the sweet lime's citric acidity while letting the dried apricot emerge through full extraction.

Troubleshooting

sour: Grind finer by ~22μm and raise temp by 1°C. Don't pour directly onto Kalita filter walls — collapsed waves reduce dwell time and produce channel extraction. The SL varieties' large bean size can produce uneven particle distributions that create hot spots in the coffee bed.

thin: Increase dose by 1g or reduce water by 15g. A metal filter adds body lost to the Kalita paper. SL-28's 'low yield' agronomic classification (WCR) translates to dense, hard beans — extraction at light roast is inherently limited, and the Kalita's thorough but gentle extraction can still fall short on TDS.

AeroPress 82/100

Grind: 340μm Temp: 85°C Ratio: 1:12.0-1:13.0 Time: 1:00-2:00

The AeroPress handles Kenyan acidity differently than pour-over methods: pressure assists in dissolving solubles from the dense SL-28/SL-34 beans, and full immersion prevents the channeling that would otherwise let the fast-extracting acids dominate. At 85°C and 340μm — 60μm finer than standard to account for light roast density — the combination of fine grind and immersion keeps extraction rate consistent without amplifying bitter extraction. SL-28's exceptional cup quality (WCR rates it as 'Exceptional') only expresses when fully extracted, and the AeroPress's pressure-assisted finish helps reach that target in a short window. The 1:12.5 ratio produces a concentrated cup that reads the cranberry, dried apricot, and sweet lime as a layered brightness rather than competing spikes, especially with a 20-30 second press and no aggressive agitation.

Troubleshooting

sour: Grind finer by ~22μm and raise temp by 1°C (to 86°C). Extend steep to 1:30 before pressing. SL-28 and SL-34 light roast from Kenya needs full contact — the 1:12.5 ratio helps, but insufficient steep time leaves the signature cranberry note reading as sharp rather than sweet.

thin: Increase dose by 1g or reduce water by 15g. Switch to the metal AeroPress filter to recover oils stripped by paper. At this density and roast level, the AeroPress can extract well but still fall below target TDS — dose is the most direct lever.

Clever Dripper 82/100

Grind: 470μm Temp: 94°C Ratio: 1:15.0-1:16.0 Time: 3:00-4:00

The Clever Dripper's controlled immersion is a pragmatic fit for a Kenyan SL lot at light roast. Even with immersion, full extraction of a light-roast Kenyan requires intentional effort — the valve controls steeping time precisely, eliminating the flow-rate variable that makes pour-over technique-dependent. At 470μm and 94°C, the grind is 60μm finer than a medium-roast Kenyan default. SL-34, classified in the Typica genetic group by WCR, tends to extract more consistently than SL-28 in immersion settings due to its slightly smaller particle distribution. The Ruiru 11 and Batian components in this lot (Kenya's introgressed rust-resistant varieties) add complexity but can bring mild earthiness — the paper filter in the Clever traps those lipids more reliably than a French Press, protecting the cranberry and sweet lime brightness.

Troubleshooting

sour: Grind finer by ~22μm and raise temp by 1°C. If releasing at 3 minutes, extend to 3:30-4 minutes. The Clever's immersion advantage is precise timing — use it. SL-28's acidity is extreme when underextracted; the full steep window is more important than fine-grind adjustment here.

thin: Increase dose by 1g or reduce water by 15g. The Clever's paper filter removes body-contributing oils. At 1,750m light roast, Kenyan SL beans are extraction-challenging — the immersion approach helps, but TDS can still run low without dose correction.

Espresso 81/100

Grind: 190μm Temp: 93°C Ratio: 1:1.9-1:2.9 Time: 0:28-0:35

Pulling a Kenyan SL-28/SL-34 shot at light roast is one of the more demanding espresso tasks: this combination faces two simultaneous challenges — the Kenyan light-roast profile and the general light-roast espresso difficulty — each pointing toward the same risk: underextraction that turns cranberry brightness into sour, astringent shots. At 190μm (60μm finer than a medium Kenyan espresso baseline), the puck resistance should support a 28-35 second extraction. The 1:2.4 ratio (center of 1:1.9-1:2.9) is longer than a traditional Italian shot, which is correct for a light roast — shorter ratios concentrate the still-acidic pre-full-extraction compounds. At 93°C, you're trading some aromatic volatility preservation for improved extraction of the sweet lime and dried apricot solubles. Preinfusion at 3-4 bar for 6-10 seconds before full pressure saturates the dense bed evenly, preventing channel formation through SL-28's larger bean particles.

Troubleshooting

sour: Grind finer by ~10μm and raise temp by 1°C. For Kenyan SL at light roast, sour shots mean underextraction of a particularly acid-forward bean. Extend preinfusion to 8-10 seconds and verify shot time reaches the lower end of the 28-35 second window before adjusting grind.

thin: Increase dose by 1g or reduce yield by 5g. Thin Kenyan SL espresso is a TDS problem, not an extraction problem — if the shot tastes bright but watery, pull toward 1:1.9 ratio rather than 1:2.9. SL-28's low agronomic yield signals dense beans with high-quality but limited available solubles.

Moka Pot 79/100

Grind: 290μm Temp: 100°C Ratio: 1:9.0-1:10.0 Time: 4:00-5:00

The Moka Pot recipe for this Kenyan lot runs at 100°C — full boiling temperature with no altitude ceiling adjustment, unlike some higher-altitude beans. At 1,750m, Kenya falls below the altitude ceiling that triggers a temperature reduction. The grind at 290μm is 60μm finer than a medium Kenyan Moka Pot baseline. Even here, the light-roast Kenyan profile matters: at 1.5 bar pressure, the Moka Pot cannot force extraction the way espresso can, so grind surface area carries most of the extraction work. The concentrated 1:9.5 ratio amplifies all of SL-28's flavors — the cranberry, dried apricot, and sweet lime become intense in the small-volume output. Remove from heat the instant sputtering begins; continued heating scorches a light roast's volatile aromatic compounds and accelerates the bitter extraction that the lower-than-espresso pressure couldn't suppress during the main pull.

Troubleshooting

sour: Grind finer by ~22μm and use pre-boiled water at full temperature. SL-28 and SL-34 light roast in a Moka Pot risks acidic sour shots if grind is too coarse. The 1.5 bar pressure only partially compensates for light roast density — grind is the primary extraction lever here.

thin: Fill the basket completely and increase dose by 1g if your basket allows. Thin Moka Pot output from a Kenyan light roast means TDS is low — the concentrated format should naturally produce strength, so thinness indicates insufficient coffee mass in the basket.

strong: Reduce dose by 1g or increase water by 15g in the lower chamber. Overly strong Kenyan Moka Pot can make the cranberry note harsh — dial toward the coarser end of the grind range before reducing dose, as dose reduction also reduces extraction.

French Press 76/100

Grind: 940μm Temp: 96°C Ratio: 1:14.0-1:15.0 Time: 4:00-8:00

The French Press is a challenging method for this Kenyan lot because its metal filter passes the Batian and Ruiru 11 variety's lipids and fines directly into the cup, adding earthiness that can obscure the cranberry and sweet lime brightness. Batian incorporates SL-28, SL-34, Rume Sudan, N39, K7, and Timor Hybrid parentage, and that complex introgressed background can carry grassy, earthy secondary notes that pass through unfiltered into a French Press cup. Ruiru 11 is a separate F1 hybrid composite with its own complex genetics. At 940μm and 96°C, the longer steep window (4-8 minutes) gives extraction time to reach the dried apricot and sweet lime notes despite the coarse grind. Using Hoffmann's method — steeping 4 minutes, then waiting 5-8 additional minutes after pressing for grounds to settle — produces the cleanest possible French Press result from this complex variety blend.

Troubleshooting

sour: Grind finer by ~22μm and raise temp by 1°C. Steep the full 8 minutes, not just 4. The light_kenyan rule fires here because SL-28 and SL-34 at light roast need maximum immersion time in the French Press to clear the sour threshold — short steep with coarse grind leaves aggressive acidity.

thin: Increase dose by 1g or reduce water by 15g. The French Press metal filter passes oils, so thinness is purely a TDS problem. At 1,750m light roast, even full-immersion extraction can produce lower-than-expected TDS — dose adjustment is the most direct 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.