Field journal · 15 notes and investigations

Tea begins before the cup.

Roads, gardens, people, storage, science and the buying claims that deserve a closer look.

Cut-paper diorama of fresh tea travelling from a steep Yunnan garden along a muddy road to night processing
New field seriesYunnan 2026: The Roads Behind the Tea Names — Five days between Menghai and Yiwu, following Lao Banzhang, Mengsong and Guafengzhai from famous names back to gardens, village roads and the long night of making tea.
Cut-paper diorama of thick Yiwu tea pouring beside a bubbling kombucha jar
curious after a failed fermentation

Why Yiwu Tea Feels So Thick

Yiwu raw pu-erh can taste gentle while its tea soup feels unusually dense. Tea chemistry offers a good explanation, and also explains why the same leaf can make an awkwardly thick kombucha.

yiwuraw-pu-erhtea-chemistry
Handcrafted paper cutaway showing ripe pu-erh, gut microbes, bile-acid pathways, and a laboratory mouse
Curious and analytical

Pu-erh Tea and Your Gut: What the Science Actually Says

Looking at recent research on how pu-erh tea's microbial fermentation changes the gut microbiome — and what's evidence versus hype for the average pu-erh drinker.

pu-erhsciencegut-microbiome
Cut-paper diorama of fresh tea travelling from a steep Yunnan garden along a muddy road to night processing
field notebook

Yunnan 2026: The Roads Behind the Tea Names

Five days between Menghai and Yiwu, following Lao Banzhang, Mengsong and Guafengzhai from famous names back to gardens, village roads and the long night of making tea.

yunnan-2026field-notespuer
Cut-paper diorama of a motorbike carrying a tea basket through a shallow forest stream road south of Yiwu
muddy shoes

From Guafengzhai to the River Road

Two days around Yiwu: Guafengzhai’s village gate, a forest road that turned into a stream, and fresh leaf still being processed late at night.

yunnan-2026field-notespuer
Cut-paper diorama of a picker climbing through a high Mengsong tea garden woven into mixed forest
looking closely

At 2,000 Metres in Mengsong

A high garden day in Menghai’s Mengsong township, where tea grew through mixed forest and altitude became something more physical than a label.

yunnan-2026field-notespuer
Cut-paper diorama of pickers gathering fresh shoots beneath an old tea tree on a steep Lao Banzhang slope
arriving

Lao Banzhang Is a Village, Not a Wrapper

A first day in Menghai among Lao Banzhang tea trees, fresh leaf and the ordinary work hidden behind Pu-erh’s most expensive village name.

yunnan-2026field-notespuer
Five mountain tea villages converging on a central Bingdao leaf appraisal table
market notebook

2025 Bingdao Five Villages Pu-erh Price Guide

Compare reported 2025 raw pu-erh prices for Bingdao Laozhai, Nanpo, Dijie, Bawai and Nuowu, with the product-stage and provenance checks those numbers still need.

bingdaobingdao-five-villagesmengku
Fresh tea leaf, loose maocha and a pressed Pu-erh cake compared beside a brass market scale
market notebook

2025 Yunnan Raw Pu-erh Leaf Prices

One practical 2025 price notebook for Yunnan pu-erh leaf, comparing Lincang, Pu’er City and Xishuangbanna without pretending every online quote measures the same thing.

yunnanprices2025