These are a traditional craft in Ukraine, with a history of thousands of years. The method is similar to batik - patterns are drawn on the egg with wax, which then protects the covered areas from the dye that is applied. By repeating this process with different colors of dye, a multi-colored pattern is built up. Finally, the wax is removed to reveal the colors that were covered up at each stage. The symbols and colors used are rich in meaning; many pre-date the arrival of Christianity, and have had Christian interpretations layered on afterward.