White Oak Gallnuts (Whole) – Tannin (Quercus infectoria)

White Oak Gallnuts (Whole) are a tannin-rich natural material widely used in natural dyeing—especially to pre-treat cotton and linen before mordanting and dyeing. A tannin bath helps mordants bond more effectively to cellulose fibers, producing cleaner, deeper, and more consistent shades. Botanical name: Quercus infectoria (Aleppo oak) Form: Whole gallnuts (crush before use) Best for Cotton & linen pre-treatment (cellulose fibers) for richer, more even results Eco printing & botanical dyeing for improved clarity and contrast Iron–tannin darks (grey to near-black tones) Also usable on wool & silk, especially for iron–tannin and botanical dye workflows   How to use (quick guide) Crush the gallnuts (whole form extracts more slowly than powder). Scour your fabric thoroughly. Prepare a tannin bath using 10% WOF (10 g gallnuts per 100 g fiber). Soak until evenly saturated, then proceed to mordanting and dyeing as needed. Tip: Strain the bath if you want a cleaner liquid.   Add