Bloom Coffee Roasters

Coffee Origins
Roaster's Reference

Flavor Profiles · Blending Guide · Roast Stages

Brazil
South America · Minas Gerais, Cerrado, Sul de Minas
Milk Chocolate Hazelnut Brown Sugar Almond
Body
4
Acidity
1
Sweetness
4
Crema
5

Ideal blend base — forgiving, versatile, crema-rich

Best for
Espresso Cold Brew Moka Pot French Press Pour Over
Ethiopia
East Africa · Yirgacheffe, Sidama, Guji
Blueberry Jasmine Bergamot Stone Fruit
Body
2
Acidity
4
Sweetness
3
Crema
2

Top-note origin — adds complexity; use 15–30%

Best for
Pour Over Aeropress Siphon Espresso Blend Cold Brew
Colombia
South America · Huila, Nariño, Antioquia
Caramel Red Apple Citrus Mild Floral
Body
3
Acidity
3
Sweetness
3
Crema
3

Balancer — bridges base and top notes well

Best for
Drip / Filter Aeropress Espresso Pour Over Cold Brew
Guatemala
Central America · Antigua, Huehuetenango, Atitlán
Dark Chocolate Dark Fruit Spice Brown Sugar
Body
4
Acidity
3
Sweetness
3
Crema
3

Strong co-base — adds bold depth and complexity

Best for
Espresso Moka Pot French Press Cold Brew Light Filter
Sumatra
Asia-Pacific · Mandheling, Gayo, Lintong
Earthy Cedar Dark Chocolate Herbs
Body
5
Acidity
1
Sweetness
2
Crema
3

Heavy-blend anchor — use sparingly (10–25%)

Best for
Cold Brew French Press Espresso Blend Moka Pot Pour Over
Kenya
East Africa · Nyeri, Kirinyaga, Murang'a
Blackcurrant Tomato Grapefruit Wine
Body
3
Acidity
5
Sweetness
3
Crema
2

Use max 10–15% — highly assertive, dominates blends

Best for
Pour Over Siphon Aeropress Filter Drip Espresso Solo
Brazil + Guatemala
Bold Chocolate · Espresso Classic
70%
30%
Brazil
Guatemala

Milk chocolate, brown sugar, dark fruit, medium-heavy body. Excellent in milk drinks. Adjust toward 50/50 for more boldness.

Brazil + Ethiopia
Specialty Classic · Fruit & Chocolate
70%
30%
Brazil
Ethiopia

Chocolate base with berry and floral top notes. Bright, sweet, complex. The most popular specialty espresso blend style.

Brazil + Sumatra
Heavy Body · Dark & Earthy
75%
25%
Brazil
Sumatra

Full-bodied, syrupy, low acidity. Earthy depth over chocolate sweetness. Powerful as espresso, cuts through heavy cream.

Brazil + Guatemala + Ethiopia
Signature Three-Origin · Balanced Complex
60%
25%
15%
Brazil
Guatemala
Ethiopia

Layered profile: chocolate body, spiced dark fruit mid, floral-berry finish. Memorable on its own or in milk. A true signature blend structure.

Chocolate & Nut
Milk Chocolate Brazil
Dark Chocolate Guatemala
Hazelnut Brazil
Almond Brazil
Cocoa Sumatra
Fruit & Berry
Blueberry Ethiopia Nat.
Blackcurrant Kenya
Stone Fruit Ethiopia
Dark Fruit Guatemala
Red Apple Colombia
Floral & Citrus
Jasmine Ethiopia W.
Bergamot Ethiopia
Grapefruit Kenya
Citrus Colombia
Orange Zest Colombia
Savory & Earthy
Cedar / Wood Sumatra
Herbs / Earth Sumatra
Tobacco Sumatra
Spice Guatemala
Winey Kenya
01
Roast Separately

Each origin has a different optimal development curve. Roast individually, then blend post-roast for best control and repeatability.

02
2–3 Origins Max

More origins create noise, not complexity. Two or three well-chosen components outperform five mediocre ones every time.

03
Balance the Triangle

Every blend needs body, acidity, and sweetness in tension. If one is missing, the cup feels flat. If one dominates, it fatigues the palate.

04
Process Matters

Natural = sweet, fruity, heavy. Washed = clean, bright, clear. Honey = middle ground. Matching or contrasting processes dramatically shifts the profile.

05
Start at 70/30

Begin with 70% base, 30% secondary. Taste. Adjust in 5–10% increments. Document every iteration with exact weights and brew parameters.

06
Test in Milk

Espresso blends live in milk. A blend that's interesting as a straight shot but disappears in a latte has failed its primary purpose.

~390–410°F
Cinnamon / Light
Underdeveloped · Pre-City
1st crack begins ~395–405°F

Grassy, sharp, sourness from underdevelopment. Sweetness not yet formed. Not suitable for espresso. Rarely used intentionally by specialty roasters.

Not recommended for espresso
415–425°F
City
Light-Medium · Earliest drinkable
End of 1st crack / just after

Bright acidity, origin character fully expressed, tea-like body. Risk of sourness or astringency if pulled too early. Best for clean, high-clarity single origins.

Ethiopia Kenya Colombia
425–435°F
City+
Medium · Sweet spot
10 sec – 1 min after end of 1st crack

Balance of origin flavor and roast character. Caramel develops, acidity refined, sweetness peaks. Sweet Maria's ideal roast level. Excellent for specialty espresso.

Brazil Colombia Ethiopia Guatemala
435–445°F
Full City
Medium-Dark · Brink of 2nd crack
At the onset of 2nd crack (~440–450°F)

Rich chocolate, caramel, dark fruit. Acidity fades, body increases. Origin character still present but roast flavors growing. Classic espresso territory.

Brazil Guatemala Sumatra
445°F+
Full City+
Medium-Dark · First snaps of 2nd crack
First few snaps of 2nd crack

Oils begin surfacing. Dark chocolate, molasses, roasty sweetness. Origin character recedes. Northern Italian espresso style typically in this range (~440–446°F).

Brazil Sumatra Guatemala
~465°F
Vienna
Light French / Dark
2nd crack well underway

Heavy oils, bitter-sweet, smoky notes emerge. Roast flavor eclipses origin character. Sweet Maria's darkest recommended espresso stage — beyond this is not advised.

Sumatra Others — use caution
~460–470°F+
French / Italian
Very Dark · Avoid
Deep into / past 2nd crack

Charred, ashy, bitter. Woody structure carbonizing. Oils heavily coat surface. All origin character lost. Burnt and dangerous above ~470–480°F.

Origin character lost — not for specialty blends
Espresso Blend Sweet Zone
City+ → Full City+  ·  425–446°F

Per Sweet Maria's, City+ (425–435°F) is the ideal balance of origin flavor and roast character. Full City (435–445°F) and Full City+ (first snaps of 2nd crack) push into bolder espresso territory. Northern Italian-style espresso typically lands at 440–446°F. Roast top-note origins like Ethiopia toward City/City+; push base origins like Brazil and Sumatra toward Full City/FC+. Note: temps vary 10–20°F by roaster and probe placement — always use sight, smell, and sound alongside temperature.