Anthrax - Cursum Perficio
Expect Nutella, Graham Cracker, and Lemon Tea from this washed lot.
Nueva Segovia · Washed

Roaster · Chicago, IL
15 lots in stock, mostly Guatemala, Colombia and El Salvador.
Coverage is below 50%. No Reddit or YouTube roaster-level signal is on file. Per-lot evidence from SCA grades, Coffee Review entries, and public on-shop product ratings is limited across the catalog. With limited signal, scores are also pulled toward a neutral 50 baseline by the Cherrybook Index methodology, so lots can read flatter than the actual cup quality differences between them. The average Cherrybook Index therefore reflects the limited per-lot evidence plus the methodology's neutral baseline.
Roaster signals
Apply to every lot from this roaster.
Per-lot signals (averaged)
Vary across lots; averaged over 15 in-stock lots.
Bonuses earned (per lot)
Base components are renormalized over whatever signals are available for each lot. SCA + Coffee Review are capped at 40% combined to keep the cupping story from dominating. Bonuses (accolades, awards, editorial coverage) and freshness decay are applied on top.
The catalog
Expect Nutella, Graham Cracker, and Lemon Tea from this washed lot.
Nueva Segovia · Washed
Think Citrus Zest, Dark Chocolate, and Raspberry.
Roaster flags Cherry, Praline, and Semi Sweet Chocolate in the cup.
Cupping notes point toward Chocolate Covered Cherry, Roasted Almonds, and Molasses.
Roaster flags Brownie, Vanilla, and Almond in the cup.
Roaster flags Dutch Cocoa, Cherry, and Praline in the cup.
Think Cocoa, Walnut, and Cherry.
Think Cocoa, Walnut, and Toffee.
Think Baker's Chocolate, Toasted Marshmallow, and Almond.
Also available · subscriptions, sample packs, gear
Swiss Water Processed lot with Plum, Dark Chocolate, and Floral in the cup.
Colombia · Swiss Water Processed
Think Peanut Butter, Orange Marmalade, and Milk Chocolate.
Think Cocoa, Almond, and Iced Tea W/lemon.
Think Boozy, Chocolate Covered Cherry, and Oak.
Cupping notes point toward Orange, Chocolate, and Graham Crackers.
Cupping notes point toward Cocoa Puffs, Vanilla Bean, and Caramel.
Taste data is still sparse; open the detail page before judging this lot.
Taste data is still sparse; open the detail page before judging this lot.
Taste data is still sparse; open the detail page before judging this lot.
Taste data is still sparse; open the detail page before judging this lot.
Expect Minty, Sweet, and Peppermint from this experimental lot.
Guatemala · Experimental
Experimental lot with Hazelnut, Clementine, and Black Tea in the cup.
Guatemala · Experimental
Experimental lot with Nectarine, Butterscotch, and Anise in the cup.
Guatemala · Experimental
Green Grape, Caramel, and Bosc Pear on an experimental lot.
Guatemala · Experimental
Expect Blood Orange, Dutch Cocoa, and Grilled Peach from this washed lot.
Mexico · Washed
Experimental lot with Pomegranate, Bakers' Chocolate, and Cherries Jubilee in the cup.
Experimental
Washed lot with Cherry Jolly Rancher, Dark Chocolate, and Granny Smith Apple in the cup.
Colombia · Washed
Expect Maple, Blackberry, and Marshmallow from this washed lot.
Washed
Roaster flags Cherry, Praline, and Semi Sweet Chocolate in the cup.
Expect Baking Spice, Dark Cherry, and Semi Sweet Chocolate from this washed lot.
Washed
Roaster flags Peach Rings, Dank Berry, and Chocolate in the cup.
Roaster flags Molasses, Bakers Chocolate, and Pear in the cup.
Roaster flags Pear, Vanilla, and Almond in the cup.
Think Praline, Stone Fruit, and Blackberry.
Roaster flags Dutch Cocoa, Cherry, and Praline in the cup.
Cupping notes point toward Cocoa, Walnut, and Cherry.
Cupping notes point toward Cocoa, Walnut, and Toffee.
Think Cherry, Praline, and Semi Sweet Chocolate.
Think Cherry, Praline, and Semi Sweet Chocolate.
Think Cocoa, Walnut, and Toffee.
Roaster flags Brownie, Vanilla, and Almond in the cup.
Roaster flags Brownie, Vanilla, and Almond in the cup.
Barrel Aged Blend lot with Booziness and Complex Sweetness in the cup.
Barrel Aged Blend
Think Plum, Walnut, and Brownie.
Think Melon, Nougat, and Cinnamon.
Guatemala / Washed; taste data is still thin.
Guatemala · Washed
On YouTube
7 videos · 110k combined views
Dark Matter Coffee has 1 video on their channel; 6 videos come from outside reviewers (Kurasu Kyoto, Coffee Breath, Grainger, and others).
From Dark Matter Coffee
Coverage from others
Chicago’s Specialty Coffee Scene
Kurasu Kyoto
Coffee Breath S1/E4: The One In Chicago
Coffee Breath
Coffee Roaster | Grainger Everyday Heroes
Grainger
"I Love My Job" Dark Matter Coffee
Weigel Digital
Episode: #449: Dark Matter Coffee: Unicorn Blood Espresso Blend Review & Chemex Process
Dad Driven Tech
Customer Feature - "Dark Matter Coffee's Devil's Lettuce Blend"
Roastar
Flagship cafe
The Mothership
738 N Western Ave, Chicago, IL
Open in maps →The flagship location of eight Dark Matter Coffee cafes in Chicago.
For roasters
Cherrybook runs a monthly Roaster Spotlight Series featuring one roaster with an editorial piece and a giveaway. Interested in being featured? See the format or email josh@cherrybookcoffee.com.