Dyeing with Beets:
1. Prepare your animal-based yarn or fabric using a mordant such as alum. This step is optional. You don’t have to prepare the fabric or yarn, but it will make the color stronger and last longer.
2. Cut 3 or 4 beets into chunks. You may want to wear gloves while cutting to avoid staining your hands or, if you’re like me, you go without protection and consider a little staining part of the fun.
3. Place the beets in a large pot of water, bring to a boil, and then simmer for an hour or so. You should use a non-reactive enamel pot like you’d use for canning.
4. When the water is obviously “red as a beet” (as the cliché goes), let it cool, and then remove the solids with a large slotted spoon. Be sure to capture as much of the solid material as you can. Toss the solids in your compost.
5. Now, bring the beet dye back to a simmer. Add your fabric or yarn and simmer for an hour or so. After an hour, you can remove the fabric, or you can remove pot from heat and let the fabric sit in the dye bath for several more hours to soak in the color.
6. Rinse the fabric or yarn thoroughly in cool water. You can save the remaining dye in a glass jar or leftover plastic bottle for another round of dyeing. To further set the color after dyeing, I often soak it in a water-filled sink with a little salt and vinegar.
