Dry earth, toasted grain, and a warm finish that settles in like a wool blanket on a cold day. Dusty Basement '17 is a shu pu-erh (熟普洱), a fermented tea transformed through weeks of controlled composting into something smooth and approachable. This batch comes from Jingmai Mountain in Yunnan and has been aging as loose leaf since spring 2017.Tasting NotesThink dry cellar with roasted grain and a honeyed sweetness underneath. The liquor pours dark walnut with a musty, grain-like scent that gives this tea its name. First steeps land full-bodied and toasty, with a fine texture from the gong ting buds that coats the mouth before a dry mineral note settles on the finish. Later rounds soften into gentle sweetness with a woody warmth that stretches across eight or more steeps. Gong ting grade — buds only — gives a finer mouthfeel than shu from larger leaf, and nine years of warehouse storage built that dry, library-like character into every steep.Where It GrowsJingmai Mountain sits in the Lancang county of Yunnan's Pu'er region, at around 1,500 meters above sea level. Cold nights at that altitude slow the leaves down, building deeper flavor compounds before anyone picks a single bud. The large-leaf assamica bushes across these slopes produce thick, sappy leaf with natural sweetness that takes well to fermentation and keeps evolving during storage.How It Is MadeSpring 2017 leaf, picked in April and processed through wo dui, a controlled wet-piling technique where the tea sits in warm, damp heaps for several weeks. Microbes do the heavy lifting, breaking down bitterness and building the earthy depth that defines this category. This batch earned a gong ting (imperial) grade, meaning only the smallest buds made the cut. Instead of pressing into a cake, it stayed as loose leaf, aging differently and picking up smoother edges over time.How It AgesNine years as loose leaf have rounded off any remaining roughness from fermentation. Warehouse aging adds a distinctive cellar quality, that dry, woody character some drinkers describe as "old library." Shu pu-erh continues to mellow with time, so this tea will keep softening in a dry spot away from strong smells. Start with 25 grams if earthy teas are new territory. That gives about five sessions to explore what warehouse-aged shu tastes like. If something cleaner and sweeter sounds better, try it alongside other Chinese teas to find where your palate lands.BrewingBrew 5 grams in 100 milliliters of boiling water (100°C) for 30 seconds. Five grams is about a tablespoon of loose leaf. Give it a quick rinse first: pour boiling water over the leaves, wait a few seconds, then pour it off. Gong ting leaf opens fast and gives eight to ten rounds of good flavor, so a 25-gram bag of loose shu pu-erh holds about five full sessions of drinking with plenty of resteeps in each one.FAQWhat is shu pu-erh?Shu pu-erh is a fermented tea from Yunnan, China. Fresh leaf goes through wo dui, a weeks-long composting process that transforms it from bitter and grassy into dark and earthy. The technique was developed in the 1970s to replicate the depth of naturally aged raw pu-erh in a fraction of the time.How is Dusty Basement '17 different from Old Grove?Dusty Basement leans into classic earthy, cellar-like character from nine years of warehouse storage. Old Grove '22 is a younger tea from ancient trees, cleaner and sweeter with more mineral finesse. If earth and grain appeal, start here; if brightness sounds better, try Old Grove.What is the 'dry storage' taste in aged shu?Dry storage means the tea aged in a cool, low-humidity environment rather than a damp warehouse. The result is a cleaner cup with less mustiness — you taste the leaf and the fermentation clearly, without the wet-cellar notes that humid storage can add. That woody, grain-forward character in Dusty Basement comes from nine years in those conditions.Does aged shu pu-erh contain mold?No. The specks sometimes visible on aged pu-erh are dried mycelium from the fermentation process, not harmful mold. Wo dui (wet piling) uses controlled microbial activity to transform the leaf, and traces of that process can remain visible. If the tea smells clean and earthy rather than sour, it is fine to drink.