Coffee Stained Fabric
This process was done on 100% unbleached muslin. I have not tried it on any other fabrics, but I imagine any blend of cotton would work. As far as the rest of the materials, you’ll need coffee and some sort of thickener such as cornstarch or arrowroot. I do not recommend flour for this process. If you can get organic, I strongly recommend that you use it so it adds to the earth friendliness. Fairly traded coffee is also a great idea.
Apply the stain in whatever way is easiest for you, either the squeeze bottle or a paintbrush. Do not put the stain on too thickly, or it will bleed. Leave it to dry completely, preferably overnight. Once it has dried, heat set the design with an iron set on cotton setting with a press cloth for about a minute keeping the iron moving so you don’t burn anything.9
After you have heat set it, rinse the fabric in the same way as described above with the vinegar-water scrubbing to remove any thick blobs of paint sitting on the fabric. Rinse again in plain water, and either hang to dry or dry with the iron (I recommend drying the design with an iron, there is less bleeding of the design.)
You can wash the fabric with a mild detergent in the washing machine, and your design should stay intact. Of course, do not bleach or use stain remover, this is a stain you want to stay. Store any leftover stain in the refrigerator.
I have also made dye/paint with other spices. Curry powder turns things a yellowish brown, and turmeric turns things a bright yellow. I have several others that I would like to try but haven’t had the time!
-I'll add pics when I have the time!