Onion Skin Dyeing Materials
• Large cooking pot and burner/stove • Alum powder (aluminum ammonium sulphate) and cream of tartar (used for pickles and baking)
• Mild, neutral pH dishwashing liquid • Oven mitts, safety glasses and rubber gloves • Tongs for removal of fibres from pot • Drying rack (clothesline or sweater drying rack) • Onion skins (many are required so you may want to clean out the bottom of the onion bin at your supermarket or ask friends to save theirs for you). The weight of the onion skin should be about twice the weight of the fibre in order to get a dense, rich colour
• Textile to dye (white fleece or yarn, white T-shirt or handkerchief).
Method 1. Clean the textile to be dyed. 2. Make the dyebath. Add onion skins to cooking pot and just cover with water. 3. Simmer the onion skins for 30 minutes to one hour. Cool and remove onion skins. 4. Treat the fibre to be dyed with a mordant. For dying with onion skins, the fibre should be pre-treated with alum mordant (see instructions above).
5. If you are dyeing pre-treated fibre that is still wet, you can add it directly to the dyebath. If the fibre is dry, it has to be wetted so that the dye attaches evenly throughout. The fibre should almost fill the cooled dyebath but still be able to move freely in the liquid.
6. Heat slowly and then simmer gently for 30 minutes to one hour. Let the dyebath cool, remove the fibre and rinse with cool water. Let dry.
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