North Star Coffee Roasters

Colombia La Colmena

colombia light roast washed san_bernardo, castillo, gesha, pink_bourbon, caturra, colombia

peachcherrycaramel

The variety list here is the story. Six varieties in one lot — San Bernardo, Castillo, Gesha, Pink Bourbon, Caturra, and Colombia — produced on the same land and processed together. That's a co-fermentation of genetically distinct plants, each contributing different organic acid profiles, volatile precursor loads, and bean densities to the same washed process. Gesha in this lot is the high-significance deviation. The synthesis is direct: Gesha is an Ethiopian Landrace variety most associated with Panama and Ethiopia. Its presence in a Colombian multi-variety lot is rare. Gesha's flavor signature — jasmine, bergamot, tea-like florals, tropical fruit — comes from a volatile chemistry profile that sits in the highest cup quality tier. Gesha also roasts like an Ethiopian Landrace: fast, tipping-susceptible, needing a lower charge temperature than Bourbon-group varieties. The challenge with a multi-variety lot is that each constituent roasts differently. Pink Bourbon (also an Ethiopian Landrace, genetically) and Gesha share similar fast-roast requirements. Castillo, an introgressed hybrid, needs a slower profile. The roaster has to find a profile that develops Castillo's Timor Hybrid character without overtaking the delicate aromatics of Gesha and Pink Bourbon. Light roasting is the only range that keeps both in play. At 1,825m in San Agustín — a Huila subregion — washed processing lets the variety complexity come through without the mucilage variables of natural or honey processing. The peach and cherry notes trace to malic acid (sweet, stone fruit) and citric acid (bright, cherry-like) preserved at light roast. Caramel is early Maillard development: brown sugar compounds forming in the first phase of roasting before development extends toward the heavier range. This is a coffee where the [Colombian single-origin flavor profile](/blog/single-origin-colombian-coffee-what-flavor-notes-to-expect) becomes a starting point, not the whole answer — Gesha's Ethiopian Landrace genetics are rewriting the aromatics from inside the lot.

Chemex 6-Cup 95/100

Grind: 500μm Temp: 93°C Ratio: 1:15.0-1:16.0 Time: 3:30-4:30

This Colombian from La Colmena earns a stellar 95 match score with the Chemex, making it one of the best pairings available. The grind is set to 500μm, a notable 50μm finer than the Chemex default. Light roasts are denser and less soluble, so the extra surface area ensures proper extraction during the 3:30–4:30 brew time. Temperature drops just 1°C to 93°C, a subtle adjustment that accounts for the mixed variety composition of this lot — including Gesha and Pink Bourbon, which benefit from a fractionally gentler approach. The slightly extended 1:15.0–1:16.0 ratio gives water more contact time per gram. The Chemex's thick paper filter is ideal here: it strips oils to maximize clarity, letting the peach and cherry notes come through with pristine definition while the caramel sweetness rounds out the finish.

Troubleshooting

sour: Grind finer by ~22μm and raise temp to 94°C. With six varieties at different densities, the coarser particles — likely from larger Gesha and Castillo beans — are under-extracting. Citric and malic acids dominate when extraction stalls early before the caramel Maillard compounds dissolve.

thin: Increase dose by 1g or reduce water by 15g. This multi-variety lot's variable bean density can lower effective TDS. A metal filter swap adds body if you want the oils back, but adjust ratio first before changing filter type.

Hario V60-02 87/100

Grind: 450μm Temp: 93°C Ratio: 1:15.0-1:16.0 Time: 2:30-3:30

The V60 scores 87 with this Colombian light roast, and the brewer's fast drainage demands precise grind calibration. At 450μm — 50μm finer than the V60 baseline — the grind compensates for the light roast's dense structure and the additional fineness needed for the mixed-variety lot that includes Gesha and Pink Bourbon. Temperature is set to 93°C, just 1°C below maximum, providing near-full thermal energy while respecting the variety composition. The 1:15.0–1:16.0 ratio and 2:30–3:30 brew time give the V60 enough contact to extract the peach and cherry flavors fully without tipping into over-extraction. The paper filter delivers a clean, bright cup where the fruit notes lead and the caramel sweetness trails behind. Pour technique matters more with the V60 than with flat-bottom brewers, so aim for steady, concentric circles to keep the bed even.

Troubleshooting

sour: Grind finer by ~22μm and raise temp to 94°C. The light roast's high chlorogenic acid concentration expresses before the Maillard-derived caramel and peach compounds extract. Finer grind and higher temp push through the acid-dominant early extraction phase.

thin: Increase dose by 1g or reduce water by 15g. Light roast at this altitude has low solubility — the V60's fast drawdown can under-extract if the bed empties too quickly. Check bloom: inadequate degassing causes bypass channeling through the conical bed.

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 earns an 86 match with this Colombian lot, and its flat-bottom design provides consistent extraction that brings out the best in a complex, multi-variety bean. The grind drops to 480μm, 50μm below the Wave's default, because the light roast needs significantly more surface area to extract properly in the 3:00–4:00 window. Temperature sits at 93°C, a 1°C reduction that gently accommodates the Gesha and Pink Bourbon varieties in the blend. The Wave's three-hole drainage evens out flow rate regardless of pour technique, making it a more forgiving choice than a V60 for this bean. At a 1:16.0–1:17.0 ratio, you'll get a cup where the peach sweetness comes through first, followed by cherry acidity and a lingering caramel finish. The paper filter keeps everything clean and well-defined.

Troubleshooting

sour: Grind finer by ~22μm and raise temp to 94°C. The Kalita's flat bed distributes water evenly, so sourness here is more likely a grind coarseness issue than channeling. Tighten grind before adjusting pour technique.

thin: Increase dose by 1g or reduce water by 15g. The Kalita's wavy filter keeps water off the walls, which prevents sidewall bypass — thin output usually means the ratio is off, not the technique.

Clever Dripper 80/100

Grind: 480μm Temp: 93°C Ratio: 1:15.0-1:16.0 Time: 3:00-4:00

The Clever Dripper scores 80 with this Colombian light roast, offering the consistency of immersion brewing with the clarity of a paper filter. The grind is set to 480μm, 50μm finer than the Clever's default, because the light roast's dense structure demands more surface area for proper extraction during the 3:00–4:00 steep. Temperature drops 1°C to 93°C, a subtle nod to the mixed variety lot. The 1:15.0–1:16.0 ratio hits a balanced midpoint between the dilute pourovers and the concentrated AeroPress. What makes the Clever particularly good for this bean is the technique independence: the full immersion ensures every particle extracts evenly, so the peach, cherry, and caramel notes develop with consistent balance. When you release the drawdown valve, the paper filter catches any fines and oils, delivering a cup that's sweet, clean, and well-structured.

Troubleshooting

sour: Grind finer by ~22μm and raise temp to 94°C. The Clever's steep time should carry extraction past the sour-dominant phase, but dense, light-roasted Gesha and Castillo beans resist diffusion even in full immersion. Keep the lid on during steep to maintain temperature.

thin: Increase dose by 1g or reduce water by 15g. Paper filtration removes oils, which reduces body versus French Press — thin output here is a ratio issue. Avoid switching to a metal filter; oils would muddy the delicate Gesha aromatics.

AeroPress 79/100

Grind: 350μm Temp: 84°C Ratio: 1:12.0-1:13.0 Time: 1:00-2:00

This Colombian light roast earns a 79 match on the AeroPress, and the concentrated immersion method creates a distinctly different cup than the pourover brewers. The grind drops to 350μm, 50μm finer than the AeroPress baseline, because the light roast's dense beans need more surface area for the short 1:00–2:00 steep. Temperature sits at 84°C, just 1°C below the AeroPress default of 85°C, a minor adjustment for the mixed variety composition. The concentrated 1:12.0–1:13.0 ratio produces a punchy, syrupy brew rather than a delicate pourover. Expect the peach and cherry notes to come through with more intensity and sweetness than you'd get from a Chemex or V60, while the caramel character becomes more pronounced at this concentration. The paper filter still keeps the cup clean, but the overall profile is rounder and fuller.

Troubleshooting

sour: Grind finer by ~22μm and raise temp to 85°C. At 84°C with a 350μm grind, even slight coarseness under-extracts this dense, light-roasted lot. The pressure helps but cannot overcome insufficient contact time at inadequate temperature with high-altitude dense beans.

thin: Increase dose by 1g or reduce water to 165g. The AeroPress's concentrated format should produce rich body — thin output usually means the ratio has slipped or bypass dilution after pressing is too aggressive.

Espresso 76/100

Grind: 200μm Temp: 92°C Ratio: 1:1.9-1:2.9 Time: 0:28-0:35

Pulling espresso from this Colombian light roast scores a 76 match and requires careful attention to the grind. At 200μm — 50μm finer than the espresso baseline — the recipe accounts for light roast density: these beans are harder and less soluble, so the finer grind creates the resistance needed for a proper 28–35 second extraction. Temperature is set to 92°C, 1°C below the espresso default, and the ratio extends to 1:1.9–1:2.9 for a longer pull that gives water more time to dissolve the light roast's tightly locked flavors. The result is a bright, fruit-forward shot where the peach becomes juicy and concentrated, the cherry delivers a snappy acidity, and the caramel provides a sweet, lingering finish. This is a modern specialty espresso profile — don't expect the heavy body of a dark-roast shot. Dialing in may take a few attempts given the fine grind required.

Troubleshooting

sour: Grind finer by ~10μm and raise temp to 93°C. Light roast espresso with Gesha in the lot is extremely sensitive to under-extraction — the density barrier resists solubilization at 9 bar. Use small grind increments only; 10μm changes flow time significantly at espresso fineness.

thin: Increase dose by 1g or reduce yield by 5g. Light roast espresso at 1:2.4 ratio should produce concentrated TDS — thin output means the shot ran long. Check grind and preinfusion pressure are consistent shot-to-shot with this variable-density lot.

Moka Pot 71/100

Grind: 300μm Temp: 99°C Ratio: 1:9.0-1:10.0 Time: 4:00-5:00

The Moka pot earns a 71 match with this Colombian light roast — a workable pairing that produces a concentrated, bold cup. The grind drops to 300μm, 50μm finer than the Moka pot baseline, because the light roast's dense structure requires more surface area for the Moka pot's brief, steam-pressure extraction. Temperature is set to 99°C, just 1°C below the Moka pot's near-boiling default, reflecting the subtle variety adjustment. At a 1:9.0–1:10.0 ratio over 4:00–5:00, the Moka pot will push this coffee into concentrated territory where the peach takes on an almost nectar-like sweetness and the cherry acidity becomes bold. The caramel note rounds things out nicely. The key to success is heat management: keep the flame medium-low and pull the pot off the burner as soon as you hear sputtering to avoid scorching these light-roast flavors.

Troubleshooting

sour: Grind finer by ~22μm and ensure you're starting with pre-boiled water. Light roast moka pot sourness often traces to slow-heating grounds that extract primarily acids before the boil cycle reaches them. Pre-boiling eliminates the extended steam-heating phase.

thin: Increase dose by 1g or reduce water by 15g. Moka pot with a light roast runs a concentration risk — the low pressure doesn't compensate for too-lean ratios. Fill the basket fully without tamping.

strong: Reduce dose by 1g or increase water by 15g. If peach and cherry are obscured by intensity, the ratio is too concentrated. This lot's multi-variety complexity gets lost at very high TDS; slight dilution opens up the aromatics.

French Press 67/100

Grind: 950μm Temp: 95°C Ratio: 1:14.0-1:15.0 Time: 4:00-8:00

The French press scores 67 with this Colombian light roast, and while it's not the highest match, it offers a distinctly different take on the bean's character. The grind drops to 950μm, 50μm finer than the French press default, because even in a long immersion brew, light roasts need more surface area to extract properly. Temperature is set to 95°C, just 1°C below the standard 96°C. At a 1:14.0–1:15.0 ratio steeped for 4:00–8:00, the long contact time develops a full-bodied cup where the peach and cherry notes become softer and rounder. The metal mesh filter passes through oils and fine particles, adding body and sweetness but trading away some of the bright, defined fruit clarity you'd get from paper-filtered methods. The caramel note is actually enhanced in the French press — the heavier body and oil content support sweetness. A solid choice if you prefer richness over brightness.

Troubleshooting

sour: Grind finer by ~22μm and raise temp to 96°C. Coarse grinding the dense, multi-density beans in this lot means the largest particles barely extract. Fines extract faster but the coarser Gesha and Castillo particles contribute only acids. Extend steep to 6-8 minutes before adjusting grind.

thin: Increase dose by 1g or reduce water by 15g. French Press passes oils and fines that should add body — thin output here usually means the ratio is off. Extend steep time to 6-8 minutes before adjusting dose.

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.