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Rosetta Roastery

Aromas del Valle 2025/26

WashedMedium

Cherrybook Index

47sparse

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

Price position

US$1.95/ozZAR 280.00 for 250g

Typical band for this profile $1.68 to $2.68 (Peru washed single-origin lots (other named varieties, retail bags); across markets; medium roast in stock). Where it sits

Catalog summary

A washed lot from Cajamarca, Peru, not yet indexed (1 of 7 signals on file) and priced inside the typical band for its listed profile.

Based on the listing and catalog evidence

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Price and availability set by the roaster.

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Cherrybook last checked this listing today.

Roaster’s notes

bright · juicy green apple · caramelised sugar

  • Fruit
  • Sugar and spice
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.

Aromas del Valle 2025/26 by Rosetta Roastery
Farm / Co-op
—
Process
Washed
Altitude
1500–2100 m
Varietals
Bourbon
Harvest
—
Weight
250g
Bag price
ZAR 280.00
Price / oz
US$1.95/oz
Brew
espresso, filter, immersion

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

Price contextmodeled

A modeled range and current prices for comparable listings.

$1.95/oz

typically $1.68 to $2.68

Where it sits

16 Peru washed single-origin lots (other named varieties, retail bags); across markets; medium roast in stock

typical band this lot

Broad comparison: 56th percentile of 16 Peru washed single-origin lots (other named varieties, retail bags); across markets; medium roast in stock right now.

This group broadens origin, roast or selling market to find enough lots. It does not qualify this coffee for a value recommendation.

What moves this price

cheaper×1.00pricier
  • Roaster brand and sourcing×1.20
  • Washed process×0.95
  • Certified organic×0.96
  • Other listed varieties×0.97
How this estimate works

A statistical model, refit weekly across the in-stock catalog, estimates what a coffee with these listed attributes typically sells for per ounce. Each multiplier compares one trait against the average lot in this market; the roaster line covers brand and sourcing together, which this model cannot separate. Bag size is shown separately, priced at the rate observed across sizes of the same coffee, because it says nothing about the coffee itself. The distribution counts every in-stock listing in the comparison group, with at least 15 listings from three roasters and no roaster supplying more than 60% of it. Decaf, blends, variety segments, processing families and bag formats stay separate. Origin, roast and selling currency can broaden as the group label indicates. Prices are converted to USD per ounce; shipping and differences in tax treatment are not adjusted. The model reads listed attributes only: the quality of the specific lot in the bag is not observable, so a price above the typical band is not evidence of overpricing.

Cherrybook Index (CBI)

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

47

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 65.0 shrunk to 51.9 + bonuses = 47.

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

  • Roaster transparency
    Producer / farm / lot disclosure depth
    65/ 100% weight

Bonuses applied

  • Stale-stock demotion
    This lot has been listed in stock for an extended time; specialty coffee freshness degrades over weeks
    +-5

Sensory profile

Acidity
4
Body
4
Balance
3

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.

Build the flight

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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US$1.95/oz· ZAR 280.00 a bag

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