Dark Arts Coffee

DRAGON - Seasonal Espresso - Brazil

brazil medium roast natural yellow_bourbon

roasted almondraisincaramel

Yellow Bourbon is one of the original Brazilian specialty varieties — a mutation of Red Bourbon that ripens later and holds more residual sugars at harvest. That slightly extended maturation window, combined with natural processing, is what drives the raisin and caramel character in this lot. At 1,100 meters in Sul de Minas, the altitude is at the lower end of what produces genuinely dense, soluble-rich coffee. The synthesis data puts altitude explaining about 25% of variation in extraction yield — at this elevation, that means less soluble headroom than high-grown Central American coffees, but enough for well-structured espresso pulls. Natural processing compensates by loading the bean with fermentation-derived esters and concentrated fruit sugars that increase the perceived sweetness and body. Roasting Yellow Bourbon follows the Bourbon-group profile: higher density relative to Typica means it absorbs heat more slowly and needs additional MAI phase time to build adequate melanoidin content. Those melanoidins become particularly important in espresso, where the extraction is compressed — the body and mouthfeel that melanoidins contribute are more apparent in a concentrated shot than in filter coffee. The roasted almond note comes from Strecker degradation. Valine and isoleucine convert to methylpropanal and 2-methylbutanal during the MAI and development phases — these are the specific compounds responsible for nutty and almond aromatic character. The raisin note is a different mechanism: fermentation-derived alcohols that partially concentrate and oxidize during the extended natural drying process, producing dried-fruit esters. Medium roast preserves both, since darker development would decompose those volatile fruit esters before they reach the cup.

Chemex 6-Cup 89/100

Grind: 565μm Temp: 90°C Ratio: 1:15.5-1:16.5 Time: 3:30-4:30

The Chemex earns the highest match score here because the 20-30% thicker paper filter does something particularly useful for a medium-roast Yellow Bourbon natural: it strips the natural-process oils that would otherwise mute the raisin and caramel character, presenting the fruit sweetness from processing with unusual clarity. Temperature is dialed back 4°C below default — 2°C for medium roast's increased solubility and 2°C because natural processing adds fermentation character that can tip toward harsh at higher temps. The coarser grind (+15μm from default) accounts for natural processing, giving water more open paths through the bed rather than forcing over-extraction to compensate. At 90°C through that thick Chemex paper, you're pulling nutty and caramel sweetness from the roast development while the filter keeps fermentation oils from muddying it.

Troubleshooting

sour: Grind finer by ~22μm and raise temp by 1°C. Yellow Bourbon natural at medium roast has sufficient solubles, but the coarser grind setting here can stall extraction in early acids before reaching caramel and almond compounds. Smaller particles and slightly higher temp push you past that threshold.

flat: Grind finer by ~22μm and raise temp by 2°C; verify water mineral content. Sul de Minas Yellow Bourbon at 1,100m has medium soluble density — soft water (under 50 ppm) lacks the mineral buffering to carry caramel and almond through. Harder water, finer grind, and more heat together solve this.

Hario V60-02 88/100

Grind: 515μm Temp: 90°C Ratio: 1:15.5-1:16.5 Time: 2:30-3:30

The V60's conical bed and large single hole create faster flow than the Chemex, which matters for a medium-roast natural whose soluble compounds are more developed and dissolve more readily. Temperature drops 4°C to 90°C — the same logic as Chemex: medium roast plus natural processing means the roast-developed compounds and fruit aromatics are already concentrated, and excess heat would push the raisin note toward a jammy, fermented edge rather than the cleaner dried-fruit character. The +15μm grind coarsens the bed to account for natural processing's slight extraction efficiency reduction. Paper filtration removes the fermentation oils from this Brazilian natural, which is the right call — those oils, unchecked, can amplify the fermented raisin note into something muddier than the roasted almond and caramel notes can balance. The V60 format rewards controlled pouring to avoid channeling in what is a medium-density bed.

Troubleshooting

sour: Grind finer by ~22μm and raise temp by 1°C. At the coarser natural-process setting, water can channel through without fully extracting the nutty and caramel compounds. Tightening particle size increases surface contact; the extra 1°C helps dissolve those Maillard compounds that sit behind the fruity acids.

flat: Grind finer by ~22μm and raise temp by 2°C; check water mineral content. Yellow Bourbon at 1,100m has medium soluble density — it won't produce a vivid cup from soft water. Confirm total dissolved solids in your brew water are in the 75-150 ppm range. Both adjustments together address extraction depth.

Kalita Wave 185 87/100

Grind: 545μm Temp: 90°C Ratio: 1:16.5-1:17.5 Time: 3:00-4:00

The Kalita Wave's flat-bottom geometry creates a more uniform extraction bed than a conical dripper, and its three small holes control flow rate for more consistent contact time. For DRAGON's medium-roast Yellow Bourbon natural, that evenness matters: the raisin and roasted almond notes come from compounds at different extraction phases (bright acids and roast-developed sweetness), and the Kalita's flatter bed minimizes the channeling that would pull unevenly from those phases. Temperature is 90°C, grind is +15μm from default — identical logic to V60 and Chemex, accounting for medium roast and natural processing. The Kalita's paper filter still strips natural-process oils, keeping the almond-caramel character clean. One caution: don't pour against the filter walls, which can collapse the wave and create channeling in this medium-density natural-processed bed.

Troubleshooting

sour: Grind finer by ~22μm and raise temp by 1°C. The Kalita's three small holes can paradoxically under-extract a too-coarse bed — water ponds and bypasses grounds. Finer grind closes those gaps; the extra degree carries raisin and caramel extraction past the fruit acid zone.

flat: Grind finer by ~22μm and raise temp by 2°C; verify water mineral content. DRAGON at medium roast has the solubles for a defined cup — if water is below 75 ppm hardness, that caramel and almond structure disappears regardless of other variables. Harder water, finer grind, and more heat together address this.

AeroPress 87/100

Grind: 415μm Temp: 81°C Ratio: 1:12.5-1:13.5 Time: 1:00-2:00

The AeroPress at 81°C — that default low AeroPress temperature already accounts for the design's pressure-assisted extraction — drops a further 4°C for medium roast and natural processing to 81°C. This is the lowest temperature across all brewers for DRAGON, which is intentional: pressure extraction in the AeroPress is more aggressive than gravity-drip, and medium-roast Yellow Bourbon natural carries developed roast-developed compounds and concentrated fruit aromatics that over-extract easily under pressure. At 81°C, you're targeting the caramel and almond compounds in the fast-to-mid extraction phase without pushing into the bitter compounds. The paper micro-filter strips oils as with the pour-over methods. The 1:13 ratio (tighter than filter methods) builds strength appropriate for the AeroPress serve format, and the +15μm grind coarsening keeps extraction from running too fast under pressure.

Troubleshooting

strong: Reduce dose by 1g or add 15g more water. The AeroPress 1:13 ratio concentrates this medium-roast Brazilian natural significantly — if the caramel and almond notes feel heavy rather than present, reduce dose first. Adding water dilutes post-press is also valid since the AeroPress doesn't suffer flavor loss from bypass dilution.

bitter: Grind coarser by ~22μm and drop temp by 1°C. Pressure extraction at 81°C can over-extract medium-roast naturals if grind is too fine — the caramel sweetness gives way to the dry distillate layer. The +15μm grind should prevent this, but if bitterness appears, coarsen further and reduce heat slightly.

Clever Dripper 87/100

Grind: 545μm Temp: 90°C Ratio: 1:15.5-1:16.5 Time: 3:00-4:00

The Clever Dripper's hybrid immersion-then-drain mechanism changes what the coarser grind setting does compared to a pure pour-over. In the Clever, all grounds steep together before draining — this creates a more even extraction than continuous-pour pour-overs and compensates somewhat for the +15μm natural-process grind coarsening, since immersion contact time ensures the full steep even through larger particles. Temperature at 90°C and the paper filter handle oils and heat in exactly the same way as the V60 and Kalita. The result is that DRAGON's roasted almond, raisin, and caramel notes come through with good body — the immersion phase extracts sugars and roast-developed compounds evenly, rather than relying on precise pouring to avoid fast channels through a coarse natural-process bed. The 1:16 ratio keeps strength in the filter-coffee range.

Troubleshooting

strong: Reduce dose by 1g or increase water by 15g. The Clever's immersion phase extracts more completely than pour-over, which can push TDS higher than intended from a medium-roast Yellow Bourbon natural that already carries substantial Maillard solubles. Diluting the ratio is the fastest fix.

bitter: Grind coarser by ~22μm and drop temp by 1°C. The immersion steep in the Clever can over-extract if grind is too fine for the full contact time. At 90°C with a coarse natural-process setting this is unlikely, but if the almond character disappears into bitterness, open the grind and reduce heat.

Espresso 77/100

Grind: 265μm Temp: 89°C Ratio: 1:1.5-1:2.5 Time: 0:25-0:30

DRAGON scores 77/100 for espresso, reflecting the genuine tension between natural-process character and espresso's compressed extraction. The 4°C temperature drop to 89°C is critical: at 9 bars, even small temperature increases dramatically accelerate extraction, and natural-process Yellow Bourbon carries concentrated fruit character that extracts readily. Too hot, and those raisin notes tip from concentrated sweetness into fermented sharpness. The +15μm grind coarsening accounts for natural processing's effect on extraction — tighter grinds with naturals at high pressure can create channeling and uneven extraction. At 19g in / 38g out (1:2 ratio) in 25-30 seconds, expect an intense shot where the caramel and roasted almond dominate the first half and raisin sweetness lingers in the finish. This is not a high-acid bright shot.

Troubleshooting

strong: Reduce dose by 1g or increase yield to 45-50g out. Medium-roast Yellow Bourbon natural produces a dense, syrupy shot at 1:2 — if it reads as thick and heavy rather than concentrated and sweet, pull longer or reduce dose. Brazilian naturals at this roast level are prone to high TDS.

sour: Grind finer by ~10μm and raise temperature by 1°C. Sour espresso from a medium natural usually means the shot is running too fast through the coarser natural-process grind setting — you're extracting fruit acids without reaching the caramel compounds. Tighten the grind minimally; a 10μm step is often enough at espresso precision.

Moka Pot 68/100

Grind: 365μm Temp: 96°C Ratio: 1:9.5-1:10.5 Time: 4:00-5:00

The Moka Pot's 68/100 score reflects the method's structural mismatch with natural-process Yellow Bourbon: steam pressure at ~1.5 bar (far below espresso's 9 bar) extracts with less precision, and the metal basket passes all natural-process oils through to the cup. Those oils compete with the raisin and caramel character rather than enhancing it — in a Moka Pot, the heavy oil load from natural processing adds body but muddies the fruit fruit clarity. Temperature at 96°C (the moka pot default adjusted down 4°C for medium roast and natural processing) and +15μm grind follow the natural-process rules. The pre-boiled water in the base is standard Moka Pot protocol — starting with boiling water prevents steam from cooking the grounds during the long heating phase before pressure builds. At 1:10 ratio, the Moka Pot brew will be intense; serve as-is or dilute for an Americano-style drink where the almond and caramel notes hold up well.

Troubleshooting

strong: Reduce dose by 1g or add 15g water to the base. Moka Pot at 1:10 concentrates a Brazilian natural heavily — natural-process Yellow Bourbon oils add perceived body on top of TDS. Post-brew dilution with hot water often reveals caramel and raisin notes that high concentration masks.

sour: Grind finer by ~22μm and raise water temperature at the base by 1°C. Sour Moka Pot output from DRAGON suggests the medium-coarse grind is allowing fast steam channeling without reaching Maillard compounds. Finer grind slows flow; pre-boiled water ensures temperature consistency from the start of brewing.

French Press 66/100

Grind: 1015μm Temp: 92°C Ratio: 1:14.5-1:15.5 Time: 4:00-8:00

French Press scores 66/100 for DRAGON, reflecting the full-immersion metal mesh's interaction with natural-process Yellow Bourbon: no oils are filtered, and the immersion steep at 92°C (4°C below default) extracts all of them. The result is a heavy-bodied cup where the raisin and caramel character is amplified but the roasted almond note can get buried under the fermentation-derived oils. The +15μm grind ensures the coarse French Press bed doesn't become unmanageable — at 1,015μm, particles are large enough to settle clearly after the steep. The brew time range of 4-8 minutes follows Hoffmann's method logic: after pressing, allow sediment to fully settle before pouring. This is where the medium roast actually helps — enough roast-developed-derived body to give the French Press cup structure without the thin, watery result you'd get from a lighter roast.

Troubleshooting

strong: Reduce dose by 1g or increase water by 15g. Unfiltered full immersion retains all natural-process oils, inflating perceived strength beyond actual TDS. Medium-roast Yellow Bourbon in a French Press reads heavier than it is — diluting the ratio brings raisin and caramel into proper balance.

bitter: Grind coarser by ~22μm and drop temp by 1°C. Extended full-immersion contact at 92°C with a medium-roast natural can push into dry distillates — the Yellow Bourbon's moderate density means over-extraction happens gradually. Open the grind and ensure you're not steeping beyond 8 minutes.

Cold Brew 64/100

Grind: 915μm Temp: 0°C Ratio: 1:6.5-1:7.5 Time: 720:00-1080:00

Cold Brew scores 64/100 for DRAGON — the lowest match, but the bean's medium roast means it's more amenable to cold extraction than lighter roasts would be. Darker roasts have more reduced acidity and more developed, soluble roast-developed compounds; medium roast sits in a middle zone where cold brew can extract adequately but won't capture the full range of raisin and caramel nuance. The natural-process oils pass through the metal mesh into the concentrate, adding body — which is the primary argument for using this bean in cold brew at all. At 1:7 ratio over 12-18 hours (720-1080 minutes), the grind at 915μm is coarse enough for clean settling. The +15μm natural-process modifier takes it even coarser. Expect chocolate and caramel-forward cold brew concentrate that loses some of the fruity raisin brightness in exchange for smooth, heavy body. Dilute 1:1 before serving.

Troubleshooting

flat: Grind finer by ~22μm and check water mineral content. Medium-roast Yellow Bourbon naturals in cold brew can taste flat if extraction doesn't reach caramel compounds — cold water moves slowly through Maillard products. Harder water (75-150 ppm) improves mineral-mediated extraction of these heavier solubles.

strong: Reduce dose by 1g or increase water by 15g. Cold brew at 1:7 from a Brazilian natural is dense, and natural-process oils compound perceived body further. If still overwhelming at 1:1 dilution, reduce dose in your next steep — excessive dilution washes out the raisin character.