Skip to product information
China: Olina Cai, Project One Light, Blue Iris
  • China: Olina Cai, Project One Light, Blue Iris
  • China: Olina Cai, Project One Light, Blue Iris
China: Olina Cai, Project One Light, Blue Iris

China: Olina Cai, Project One Light, Blue Iris

Blueberry, Lychee, Peach Oolong

Blue Iris
Producer Olina Cai
Farm Project One Light, Mangshi, Yunnan, China
Method Anaerobic Honey
Varietal Catimor
R.Profile Omni - Great for Filter, Espresso & Cold Brew
$66.00
Next Roast: September 01, 2025
Enjoy free delivery on all orders over $69
About Producer & Farm

Project One Light, started in 2021 by Olina Cai, a coffee business in Yunnan that focuses on producing high-quality coffee. Their team of experts ensures that the coffee is grown and processed with care, following sustainable and ethical practices. Their goal is to keep improving Yunnan coffee and share it with the world while supporting everyone involved in the coffee-making process.
Processing Method

Anaerobic Honey Process.The farmers select ripe coffee cherries grown at high altitudes (1,300–1,500m) in Mangshi, Dehong.

The cherries are fermented in closed containers where temperature and humidity are controlled. Afterward, the beans are dried under the sun for two weeks.

This process gives the coffee a unique taste with floral aromas, blueberry-like acidity, honey sweetness, and a refreshing lychee flavour.
More Flavour Info

Overall Cupping Score*: 89

• Acidity: Medium High - mixed berries like
• Body: Medium Light - Tea Like
• Sweetness: Medium High- vibrant pink stonefruit
• Aftertaste: Low

*Cupping score based on the Coffee Value Assessment (CVA) form

Brew Guide

• Coffee to Water Ratio: 1:17
• Grind Size: Medium to medium-coarse - 480 µm
• Water Temperature: 92°C
• Brew Time: 2 minutes 45 seconds
Roasting Profile

• Roast level: Medium Light
• Total roast time: ~4 minutes 58 seconds
• End temperature: 199 °C
• Development time: ~1:00 (~20% dev ratio)
This lower RTD helps preserve the coffee’s high floral notes, delicate fruit aromatics, and bright, sparkling acidity.

Why it matters:
This medium-light roast highlights the coffee’s bright and juicy notes, with flavors of blueberry, lychee, and delicate peach oolong. The controlled anaerobic honey process and short development preserve clarity and sweetness while giving a vibrant, complex cup.
When to Open & Best Enjoyed

For Filter

Ready to open:
Day 5 — can be aged and remain unopened til Day 21

After opening:
Enjoy within 18 days


Freshly roasted coffee needs time to “rest.” In the first few days, it’s still releasing CO₂, which can make your cup taste sharp or gassy. Giving it a little time helps the coffee open up, bringing out more clarity, sweetness, and a cleaner finish.

For Espresso

Ready to open: Day 7 — can be aged and remain unopened til Day 34

After opening: Enjoy within 28 days

Espresso needs more rest than filter. During the first week, the coffee is still releasing gas, which can cause uneven extraction, mute flavours, and introduce sharp acidity. Allowing it more time lets the flavours settle, producing a more balanced, sweet, and structured cup.

(Note: Once opened, coffee begins to age faster due to exposure to air. Enjoy within this period for the best experience.)
Perhaps a bit more