Understanding Coffee Beans
Coffee flavor begins at origin—the combination of varietal, terroir, processing, and roasting creates the final cup. This guide explores coffee-growing regions, flavor characteristics, and how to choose beans for your taste.
Coffee Species
Arabica (Coffee arabica)
Market Share: 60-70% of world production
Characteristics:
- Complex, nuanced flavors
- Higher acidity, bright notes
- Wider range of flavor profiles
- Sweeter, more delicate
- Grown at higher altitudes (3,000-6,500 ft)
- More expensive
Flavor Range:
- Fruity, floral, winey
- Chocolatey, nutty
- Sweet, balanced acidity
Common Varieties:
- Typica (original, delicate, complex)
- Bourbon (sweet, balanced, full body)
- Caturra (bright acidity, medium body)
- Geisha/Gesha (floral, tea-like, exotic fruits)
- SL28/SL34 (fruity, winey, vibrant)
Robusta (Coffea canephora)
Market Share: 30-40% of world production
Characteristics:
- Strong, bold, bitter
- Low acidity
- Higher caffeine (2x Arabica)
- Full body, earthy
- Grown at lower altitudes (0-2,000 ft)
- Cheaper, hardy plant
- Disease resistant
Flavor Profile:
- Earthy, woody, grainy
- Burnt rubber, peanutty
- Bitter, astringent
Best Uses:
- Espresso blends (adds crema and body)
- Italian-style coffee
- Instant coffee
- Commercial blends
Coffee-Growing Regions
The Coffee Belt
Coffee grows in the “Bean Belt”—tropical and subtropical regions between Tropics of Cancer and Capricorn.
Key Requirements:
- Altitude: 2,000-6,500 ft for Arabica
- Temperature: 60-70°F average
- Rainfall: 60-80 inches/year
- Rich, volcanic soil
- Shade (often under canopy)
African Coffees
Ethiopia (Birthplace of Coffee)
Regions: Yirgacheffe, Sidamo, Harrar
Flavor Profile:
- Bright, wine-like acidity
- Blueberry, strawberry, floral notes
- Tea-like body (light-medium)
- Bergamot, jasmine aromas
Processing: Washed (clean, bright) or Natural (fruity, funky)
Best For: Light to medium roasts, pour over, showcasing origin
Ethiopia Yirgacheffe (Example):
- Lemon, floral, bergamot
- Light body, vibrant acidity
- Clean, complex
- Often naturally processed
Kenya
Regions: Nyeri, Kirinyaga, Kiambu
Flavor Profile:
- Intense acidity (tomato, black currant)
- Winey, juicy
- Grapefruit, blackcurrant, savory
- Full body despite bright acidity
Processing: Washed (double fermentation method)
Varietals: SL28, SL34 (known for vibrant flavors)
Best For: Light-medium roasts, pour over, cold brew
Rwanda & Burundi
Similar to Kenya:
- Bright acidity
- Fruity, floral
- Often red berries, orange
- Clean, sweet
Growing Recognition: Improving quality, excellent value
Central & South American Coffees
Colombia
Regions: Huila, Nariño, Antioquia, Tolima
Flavor Profile:
- Balanced, approachable
- Caramel, nuts, chocolate
- Mild acidity, medium body
- Clean, consistent
Processing: Mostly washed
Best For: All-purpose coffee, medium roasts, reliable quality
Brazil
World’s Largest Producer: 40% of global coffee
Regions: Minas Gerais, São Paulo, Bahia
Flavor Profile:
- Low acidity
- Chocolatey, nutty
- Heavy body, creamy
- Cocoa, peanut, caramel
Processing: Natural (pulped natural common)
Best For: Espresso blends, medium-dark roasts, milk drinks
Costa Rica
Regions: Tarrazú, West Valley, Central Valley
Flavor Profile:
- Bright, clean acidity
- Honey, citrus, apple
- Medium body
- Well-balanced
Processing: Washed, honey processed
Quality Focus: High standards, good infrastructure
Best For: Light-medium roasts, pour over
Guatemala
Regions: Antigua, Huehuetenango, Atitlán
Flavor Profile:
- Full body, rich
- Chocolate, spice, smoky
- Balanced acidity
- Complex, layered
Processing: Washed
Growing Conditions: Volcanic soil, high altitude
Best For: Medium roasts, French press
Panama
Famous For: Geisha variety (exotic, expensive)
Geisha Flavor:
- Floral (jasmine, hibiscus)
- Tropical fruits (mango, papaya)
- Tea-like body
- Delicate, complex
Price: $50-150+ per pound (rare lots auction for $1,000+/lb)
Asian & Pacific Coffees
Indonesia
Regions: Sumatra, Java, Sulawesi
Flavor Profile:
- Earthy, herbal
- Low acidity
- Full, syrupy body
- Tobacco, cedar, dark chocolate
Processing: Wet-hulled (Giling Basah) - unique to Indonesia
Sumatra Mandheling:
- Earthy, spicy
- Herbal, forest floor
- Full body, low acidity
Java:
- Cleaner than Sumatra
- Spicy, earthy
- Medium body
Best For: Dark roasts, French press, those who dislike acidity
Vietnam
World’s 2nd Largest Producer: Mostly Robusta
Flavor: Strong, bitter, earthy (Robusta characteristics)
Traditional Drink: Ca phe sua da (iced coffee with condensed milk)
Papua New Guinea
Flavor Profile:
- Fruity, complex
- Medium body, balanced acidity
- Similar to Central American or East African
Processing: Washed
Quality: Variable, but good estates produce excellent coffee
Hawaii (Kona)
Only U.S. Commercial Coffee Production
Flavor Profile:
- Smooth, mild
- Nutty, buttery
- Low acidity
- Medium body
Price: Expensive ($40-60/lb) due to labor costs
Authenticity: Look for “100% Kona” (many blends are only 10% Kona)
Flavor Profiles by Region
Processing Methods
How coffee is processed after harvest dramatically affects flavor.
Washed (Wet) Processing
Process:
- Cherry skin removed (depulping)
- Beans ferment in water 12-48 hours (removes mucilage)
- Beans washed clean
- Dried on patios or raised beds
Flavor Impact:
- Clean, bright, complex
- Highlights origin characteristics
- Higher acidity
- Clarity of flavor
Common In: Central America, East Africa, Colombia
Natural (Dry) Processing
Process:
- Whole cherries dried in sun (intact fruit)
- Takes 3-4 weeks
- Fruit removed after drying
Flavor Impact:
- Fruity, wine-like, funky
- Heavier body
- Lower acidity
- Berry flavors, fermented notes
Common In: Ethiopia, Brazil, Yemen
Risk: Uneven drying can cause defects
Honey Processing (Pulped Natural)
Process:
- Skin removed but mucilage (honey) left on bean
- Dried with sticky layer intact
- Variations: White, yellow, red, black honey (amount of mucilage left)
Flavor Impact:
- Between washed and natural
- Sweet, fruity
- Good body
- Balanced
Common In: Costa Rica, Brazil, Central America
Wet-Hulled (Giling Basah)
Process:
- Unique to Indonesia
- Parchment removed while beans still wet (12% moisture vs. 10-11%)
- Dried after hulling
Flavor Impact:
- Earthy, herbal, spicy
- Full body, low acidity
- Distinctive Indonesian profile
Common In: Sumatra, Sulawesi
Roast Levels
Light Roast
Appearance: Light brown, no oil on surface Internal Temp: 356-401°F Flavor: Origin characteristics dominate, bright acidity, fruity/floral Body: Light to medium Caffeine: Slightly higher (less roasting = more caffeine preserved)
Best Beans: Ethiopian, Kenyan, specialty single-origins
Brewing: Pour over, V60, to highlight complexity
Medium Roast
Appearance: Medium brown, no oil Internal Temp: 410-428°F Flavor: Balanced, sweet, caramelized sugars, moderate acidity Body: Medium Caffeine: Standard
Best Beans: Colombian, Costa Rican, most single-origins
Brewing: Versatile - drip, pour over, French press
Medium-Dark Roast
Appearance: Dark brown, slight oil sheen Internal Temp: 437-446°F Flavor: Bittersweet, caramel, chocolate, lower acidity Body: Full Caffeine: Slightly lower
Best Beans: Brazilian, Guatemalan, blends
Brewing: French press, espresso
Dark Roast
Appearance: Very dark brown to black, oily surface Internal Temp: 464-482°F Flavor: Roast flavors dominate (smoky, charred, bitter), low acidity Body: Full, thin (oils burned off) Caffeine: Lowest
Best Beans: Indonesian, Brazilian, lower-grade beans (roast hides defects)
Brewing: Espresso, French press, moka pot
Choosing Coffee Beans
Based on Brewing Method
Pour Over:
- Light to medium roast
- Bright, complex origins (Ethiopia, Kenya, Costa Rica)
- Washed processing
French Press:
- Medium to medium-dark roast
- Full body origins (Brazil, Guatemala, Sumatra)
- Natural or honey processing
Espresso:
- Medium to dark roast
- Blend of origins for balance
- Brazilian base + Ethiopian brightness + Sumatra body (classic blend)
Cold Brew:
- Medium to dark roast
- Chocolate/nutty profiles (Brazil, Colombia)
- Natural processing
Based on Taste Preference
I Like Bright, Fruity Coffee:
- Ethiopian Yirgacheffe (natural)
- Kenyan AA
- Light roast
- Pour over brewing
I Like Smooth, Chocolatey Coffee:
- Colombian Supremo
- Brazilian Santos
- Medium roast
- Drip or French press
I Like Bold, Strong Coffee:
- Sumatra Mandheling
- French Roast blend
- Dark roast
- French press or espresso
I Like Balanced, Approachable Coffee:
- Costa Rican Tarrazú
- Guatemalan Antigua
- Medium roast
- Any brewing method
Single-Origin vs. Blend
Single-Origin
What It Is: Beans from one location (country, region, or even single farm)
Pros:
- Showcases unique terroir
- Distinct flavor profile
- Traceability
- Exciting and varied
Cons:
- Can be polarizing (very acidic or earthy)
- More expensive
- Seasonal availability
Best For: Exploring, light roasts, pour over
Blend
What It Is: Beans from multiple origins combined
Pros:
- Balanced, approachable
- Consistent year-round
- Often cheaper
- Each origin contributes specific characteristics
Cons:
- Less distinctive
- Can hide low-quality beans
Classic Espresso Blend:
- 60% Brazilian (body, chocolate, base)
- 30% Colombian/Central American (balance, sweetness)
- 10% Ethiopian/Kenyan (brightness, complexity)
Best For: Espresso, everyday drinking, milk drinks
Coffee Grading & Quality
Specialty Coffee Association (SCA) Scoring
100-Point Scale:
- 90-100: Outstanding, rare
- 85-89: Excellent, premium specialty
- 80-84: Very good, specialty grade
- <80: Below specialty, commodity coffee
Criteria:
- Aroma, flavor, aftertaste
- Acidity, body, balance
- Uniformity, clean cup, sweetness
- Defects (none for specialty)
Common Grading Terms
AA, AB, PB (Kenya):
- AA: Largest bean size, often highest quality
- AB: Medium bean size
- PB: Peaberry (single round bean, ~5% of crop, prized)
Supremo, Excelso (Colombia):
- Supremo: Screen size 17+ (largest)
- Excelso: Screen size 15-16
SHB, SHG (Central America):
- Strictly Hard Bean / Strictly High Grown
- Grown above 4,000 ft
- Denser beans, better quality
Grade 1 (Ethiopia):
- Highest quality, fewest defects
- Specialty grade
Note: Size ≠ quality always, but often correlates
Buying & Storing Coffee
Where to Buy
Best:
- Local specialty roaster (fresh, knowledgeable staff)
- Online specialty roasters (Blue Bottle, Counter Culture, Intelligentsia)
- Directly from farms (if available)
Avoid:
- Grocery store (usually stale, months old)
- Beans in clear containers (light damages coffee)
- Pre-ground (goes stale in days)
What to Look For
Roast Date:
- Must be listed
- Buy within 2 weeks of roast date
- Use within 4-6 weeks
Origin Information:
- Country minimum
- Region/farm better
- Varietal, altitude, processing (best)
Price:
- Specialty coffee: $12-20/lb typical
- Premium single-origin: $20-30/lb
- Rare lots (Geisha, competition): $50-200+/lb
- Cheap coffee (<$8/lb): Low quality or stale
How to Store
Golden Rules:
- Airtight container
- Cool, dark place
- Away from light, heat, moisture, air
Best Containers:
- Opaque, airtight canister (Airscape, Fellow Atmos)
- Original bag with valve (if resealable)
- Mason jar (if stored in dark cabinet)
Don’t:
- Freeze or refrigerate (causes condensation, off-flavors)
- Keep in clear container (light degrades)
- Store near stove or in sun
Shelf Life:
- Whole bean: 4-6 weeks peak, drinkable 2-3 months
- Ground: 1-2 weeks peak, stale after 1 month
Next Steps
- Learn Brewing Methods to best showcase your beans
- Explore Equipment Guide for proper grinders and brewers
- Browse our Coffee Database for specific bean recommendations
- Try our Taste Profile Quiz to find your perfect coffee
Understanding coffee beans transforms your daily cup from routine to ritual. Each origin tells a story—from Ethiopian highlands to Brazilian plantations, from cherry to cup. Taste, explore, and discover your favorites!