In the context of Liberty Beans Coffee, “untitled” refers to the uncharted, undocumented sensory potential within each micro-lot—governed by roast thermodynamics, water mineral profiles, grind particle distribution, and extraction yield curves. It’s not a lack of name, but an invitation to explore the latent chemistry and craft that define elite coffee experiences beyond branding.
What “Untitled” Really Means in Specialty Coffee
In the lexicon of Liberty Beans Coffee, “untitled” doesn’t signify absence—it signifies potential. It’s the unbranded, unboxed, unmarketed essence of what happens when green coffee beans meet calibrated heat, precise water chemistry, and human intuition. Each batch labeled “untitled” is a deliberate omission of narrative, forcing the drinker to engage with the sensory data: aroma compounds, tactile mouthfeel, acidity modulation, and aftertaste evolution.
“Most roasters name their coffees to sell stories. We leave them untitled to sell truth—the truth of extraction, roast curve fidelity, and bean integrity.” — Jim Morton, Culinary Chef & Coffee Expert
This approach demands technical literacy from the brewer. You’re not following a recipe—you’re interpreting a chemical reaction in real time.
The Chemistry of Extraction Yield & TDS Optimization
Extraction yield (EY) is the percentage of soluble material pulled from ground coffee into your cup. Ideal EY ranges between 18%–22%. Below 18%, you’re under-extracting—leaving desirable sugars and acids behind. Above 22%, you’re over-extracting bitter quinic acids formed from degraded chlorogenic acids.
| Extraction Yield (%) | Taste Profile | Chemical Dominants |
|---|---|---|
| <16% | Sour, thin, grassy | Organic acids (citric, malic), underdeveloped sugars |
| 18–20% | Balanced, sweet, complex | Caramelized sucrose, developed melanoidins, moderate chlorogenic |
| >22% | Bitter, dry, astringent | Quinic acid, lignin breakdown products, over-degraded phenols |
- Use a refractometer to measure Total Dissolved Solids (TDS). Multiply TDS % by brew ratio to calculate EY: EY = TDS × (Brew Water / Dose)
- Aim for 1.30–1.45% TDS in filter brews. Espresso targets 8–12% TDS.
- Adjust grind size first, then time, then temperature—not the other way around.
Water Mineral Chemistry: Magnesium, Calcium & Bicarbonate Ratios
Water isn’t a passive solvent. Its ionic composition determines which flavor compounds are extracted—and how fast. Magnesium ions (Mg²⁺) preferentially bind to fruity acids. Calcium ions (Ca²⁺) enhance body and sweetness. Bicarbonate (HCO₃⁻) buffers acidity but can mute brightness if over 70 ppm.
“If your coffee tastes flat or muddy, don’t blame the bean. Blame the bicarbonate. Dial in your water before you dial in your grinder.” — Dr. Samira Chen, Water Chemist & SCA Consultant
| Mineral | Ideal Range (ppm) | Flavor Impact |
|---|---|---|
| Magnesium (Mg²⁺) | 10–25 ppm | Enhances citrus, berry, wine-like acidity |
| Calcium (Ca²⁺) | 30–60 ppm | Builds body, caramel, chocolate notes |
| Bicarbonate (HCO₃⁻) | 30–70 ppm | Buffers acidity; above 70 ppm mutes brightness |
- Test your tap water with a GH/KH test kit.
- If KH > 4°dH, dilute with distilled or RO water.
- Add food-grade MgSO₄ and CaCl₂ to rebuild profile.
- Target 150 ppm total dissolved minerals for balanced extraction.
Grind Particle Distribution & Burr Alignment Physics
Uniformity matters more than fineness. A misaligned burr grinder produces bimodal distribution: fines (under 200 microns) extract too fast, boulders (over 1000 microns) extract too slow. The result? Simultaneous sourness and bitterness—a hallmark of poor particle geometry.
How to Audit Your Grinder
- Use a USB microscope (40x magnification) to inspect grind spread.
- Weigh dose pre- and post-sift using a 250-micron sieve. Fines should be ≤12% of total mass.
- Realign burrs using feeler gauges or manufacturer shims. Even 0.05mm offset causes channeling.
Particle Size Targets by Brew Method
- Espresso: 200–400 microns (fine sand)
- Pour Over: 400–800 microns (table salt)
- French Press: 800–1200 microns (coarse sea salt)
Roast Thermodynamics: Endothermic Turns & Maillard Plateaus
Roasting isn’t cooking—it’s controlled pyrolysis. The “first crack” at ~196°C marks cellulose fracture and water vapor release. But elite roasters watch the Rate of Rise (RoR) curve, not the clock. A declining RoR after first crack ensures even development without tipping or scorching.
- Dry Phase (0–5 min): Bean temp 100–150°C. Moisture evaporation. Keep RoR rising steadily.
- Maillard Phase (5–8 min): 150–180°C. Non-enzymatic browning begins. Amino acids + reducing sugars form melanoidins.
- Development Phase (8–12 min): Post-first-crack. RoR must decline gently. Target 12–15% development time ratio.
Drop too early? Underdeveloped sugars dominate. Drop too late? Quinic acid spikes. “Untitled” batches are roasted to hit exact solubility windows—not arbitrary color targets.
Interactive Brewing Ratio Infographic Panel
Brewing Ratio Calculator & Flavor Spectrum
Select your method:
- Espresso
1:2 | 18–22g in → 36–44g out | 25–30 sec - Pour Over
1:15–1:17 | 20g in → 300–340g out | 2:30–3:30 min - French Press
1:13–1:15 | 30g in → 390–450g out | 4:00 min steep
Adjust for flavor:
- More Sweetness?
↑ Dose slightly, ↓ Grind size - More Acidity?
↓ Temp 2°C, ↑ Coarseness - Less Bitterness?
↓ Brew time, ↑ Water hardness
Direct Trade Logistics & Micro-Lot Traceability
Liberty Beans’ “untitled” lots trace back to single farms, often single plots. This isn’t marketing—it’s chemistry control. Altitude, soil pH, varietal (Gesha vs Caturra), and fermentation protocol (anaerobic vs carbonic maceration) alter precursor compounds. A Gesha from Panama’s Volcán Barú behaves differently under heat than a SL28 from Nyeri, Kenya—even at identical roast curves.
- Altitude: Higher elevation = denser cell structure = slower heat transfer = longer development phase needed.
- Fermentation: Extended anaerobic ferments increase lactic acid, requiring lower extraction yields to avoid sourness.
- Processing: Washed beans extract cleaner; naturals demand coarser grinds to manage mucilage-derived pectins.
Each “untitled” release includes batch-specific extraction guides—not because we’re withholding names, but because the variables are too dynamic for static recipes.