The celebration takes place every year in the town of Eleusis, on the eve of the Presentation of Mary, the 21st of November, in the post-Byzantine chapel of the Holy Virgin of Mesosporitissa.
The chapel was built above the ancient locale of Telestirio. It represents the revival of an ancient custom that began in the Mycenaean era in honor of the goddess Demetra (Ceres). In Christian times, the locals assigned that role to the Virgin Mary, naming her Mesosporitissa (sporos meaning seed) because it was the season when the sowing of seeds was underway.
On that day, the “Polysporia” (many seeds) are being prepared, a ritual coming from ancient times. In other words, women boil legumes (such as chickpeas, beans, and lentils), but also, wheat in their homes, reviving the rural tradition to cook what they were producing and to take them in a cauldron where they are mixed, together with petimezi, pomegranate, and raisins. Then the final product, the “polysporia”, is distributed in plastic cups and after the Vespers (around 5 in the afternoon) it is distributed to the people who have gone up to the church to attend the festive service, together with bread, artos and prosforo for the celebration of the Virgin Mary of Mesosporitissa.