Types of Tea

Introduction

Every true tea — whether a delicate white silver needle or a bold Assam breakfast blend — originates from the same plant species, Camellia sinensis. The astonishing diversity of the tea world comes not from different plants but from how the leaf is processed after plucking. The single most important variable is {{glossary:oxidation}}: the enzymatic browning reaction that darkens the leaf and transforms its chemistry.

The Six Categories

Green tea is unoxidized (0%). After plucking, leaves are quickly heated — steamed in Japan, pan-fired in China — to deactivate the oxidation enzymes. This preserves the leaf's fresh, vegetal character and high {{glossary:catechins}} content.

White tea undergoes minimal processing: the leaves are simply withered and dried, with light natural oxidation of 5-12%. Buds and young leaves are prized for their subtle sweetness and downy appearance.

Yellow tea is the rarest category, made only in a few Chinese provinces. Processing resembles green tea but includes a unique smothering step (men huang) that gently oxidizes the leaf to 10-20%, yielding a mellow, sweet character without green tea's grassiness.

Oolong tea spans the widest oxidation range, from 15% to 85%. Lightly oxidized oolongs (Tie Guan Yin, high-mountain Taiwanese) are floral and buttery. Heavily oxidized oolongs (Da Hong Pao, Oriental Beauty) develop rich, fruity, roasted profiles. This breadth makes oolong the most diverse single category.

Black tea (called red tea in China for its liquor color) is fully oxidized at 90-100%. The complete oxidation converts {{glossary:catechins}} into {{glossary:theaflavins}} and thearubigins, creating the bold, malty, and brisk flavors that dominate global tea consumption.

Pu-erh tea is a post-fermented category unique to Yunnan province, China. After initial processing, the tea undergoes microbial fermentation — either slowly over years (sheng/raw) or accelerated through controlled moisture and heat (shu/ripe). This creates earthy, complex flavors that evolve dramatically with age.

Why It Matters

Understanding these six categories is the foundation of all tea knowledge. Each category represents a fundamentally different approach to the same raw material, and knowing where a tea sits on the oxidation spectrum immediately tells you about its flavor profile, health compounds, and ideal brewing parameters.

Beyond the Six

Herbal infusions — chamomile, rooibos, peppermint — are technically tisanes, not tea, because they contain no Camellia sinensis. Matcha is a form of green tea (stone-ground into powder), not a separate category. Chai is a preparation style (spiced black tea with milk), not a type.