I love my Hungarian blue aprons. They are also part of the Hungarian heritage.
These aprons were made in a more than 200 years old Hungarian blue-dye workshop, where the sixth generation of the same family is making them by hand. They are all unique art pieces, all of them have different patterns.
The process of blue-dying:
They start with white linen, that first has to be soaked in hot soapy water to remove all residues from the fabrication. Then they rinse the fabric and hang it to the attic of the workshop to dry.
At the next step they make the patterns. They stamp a special waxy material on the fabric. They have hundreds of old stamps they combine to make their beautiful, unique patterns. Then they place the fabric into a dye mixture and color it at 185 F. The patterns covered by the waxy material remain white, while the rest of the fabric becomes blue.
After painting, they dilute the waxy layer, rinse the fabric and hang it at the attic again to dry. They have two more steps before the fabric is ready: soaking in starch and drying, then calendering.