POST-FERMENTED TEAS
six teas changed by microbes rather than oxygen
$1.50
PUERH AGEING
sheng and shu · what the years do and when to drink
$1.50
BLACK TEA
grades, six leaves and four blends · in China it is "red tea"
$1.50
GREEN TEA
six leaves · water, time, number of steepings
$1.50
OOLONG
from 15 to 80 % oxidation · leaf shape · seven steepings
$1.50
SIX KINDS OF TEA
one plant · the oxidation scale · seven processing steps
$1.50
ROMAN NUMERALS
seven symbols · ones, tens, hundreds · years
$1.50
THE KEYBOARD
three octaves · every key and its note on the staff
$1.50