White fuzz on chenpi pu'er tea should be assessed by thickness, color, smell, and texture. A light, even white bloom can be normal, while dampness or mold is not suitable for drinking.
When it is usually acceptable (light white bloom)
Under normal roasting and storage conditions, a thin, evenly distributed white bloom can appear on the surface. If it is light, dry, and without off-odors or dark spots, it is generally considered a normal appearance change.
When it is not recommended (suspected dampness or mold)
If the layer is thick, darkened, clumped, or accompanied by a musty odor, damp feel, or stickiness, it may indicate moisture damage or mold. In such cases, do not drink it.
About chenpi pu'er tea
Chenpi pu'er tea is commonly made by combining chenpi with ripe pu'er and processing them together. Proper storage should focus on keeping it dry, ventilated, and away from direct light.