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Rosetta Roastery

Bombe Anaerobic Natural

Anaerobic Natural

Cherrybook Index

53sparse

Evidence-of-quality score, not a cup score. Sparse signal: 1 of 7 signals on file. Methodology

Price position

US$3.63/ozZAR 420.00 for 200g

Price position appears once the price model has scored this lot.

Catalog summary

An anaerobic Natural lot from Sidamo, Ethiopia, not yet indexed (1 of 7 signals on file).

Based on the listing and catalog evidence

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Price and availability set by the roaster.

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Roaster’s notes

floral & layered · raspberry · baked peaches

  • Fruit
  • Floral
Open the flavor wheel

Mapped from the roaster’s tasting notes to the SCA flavor wheel; Cherrybook’s interpretation of the stated notes, not the roaster’s own categorization.

Bombe Anaerobic Natural by Rosetta Roastery
Farm / Co-op
Bombe Washing Station
Altitude
1900–2400 m
Varietals
Heirloom
Harvest
2026
Weight
200g
Bag price
ZAR 420.00
Price / oz
US$3.63/oz
Brew
espresso, filter

from the roaster’s storeread by Cherrybook from the listing“estimated” below = inferred, not stated

Cherrybook Index (CBI)

Evidence-of-quality score, not a cup score. Methodology

53

Sparse signal

Confidence1 of 7 signals on file

Score is heavily shrunk toward 50; treat as a placeholder until more sources arrive.

How confidence affects the score

Coverage measures signal availability, not cup quality. This coffee has 5% of the signal universe on file. Missing sources are dropped, remaining weights are renormalized, and the result is shrunk toward a neutral 50 baseline by 88% so one thin signal cannot carry the score on its own.

The math on file: renormalized base 70.0 shrunk to 52.5 = 53.

Missing: SCA grade, Coffee Review, Reddit sentiment, YouTube reviews, On-shop ratings, Cherrybook ratings

  • Roaster transparency
    Producer / farm / lot disclosure depth
    70/ 100% weight

Comps & alternatives

Tasting flight

Compare this with three more lots selected from the catalog.

Brew a set side-by-side. The picks vary along axes that pair with this lot; origin, process, roast, or producer; so you learn the difference, not just drink four good cups.

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Reference · About the varietal & origin

About Rosetta Roastery

On YouTube

Meet the roaster on camera

2 videos

About the roasterInterview

มุดบาร์เพื่อน ep.10 | ตี๋ Rosetta Roastery: Specialty Coffee

Toon Bluetamp

Watch on YouTube

This video covers Rosetta Roastery; it is general roaster coverage.

Cherrybook summary of the video

This video features an interview with Tee, the founder of Rosetta Roastery, discussing his journey from working in Australia to opening his own roastery in Thailand. The conversation covers his philosophy on expanding to regional areas in Thailand, his approach to latte art, and his commitment to quality control by roasting his own coffee.

Inside this video

From Toon Bluetamp:

“เราอยากไปอยู่ตามหัวเมืองบ้าง เพราะว่าเวลาเราไปต่างประเทศเนี่ย เราจะไปแต่จังหวัดที่คนเขาไปกัน เราก็เลยคิดว่าเหมือนกัน ถ้าเป็นเรามาเป็นต่างชาติมาเที่ยวเมืองไทย เราไม่มาจังหวัดนี้ เราอยากให้มันอยู่ตามหัวเมืองบ้าง”
“เราอยากทำ ให้เราเห็นปุ๊บแล้วต้องดูออกว่ามันคืออะไร”

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Rosetta Roastery

US$3.63/oz· ZAR 420.00 a bag

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