Rembang has known as a traditional salt producing area in Central Java. If in the long dry season, the salt production in this territory is increased. But, in the rainy season, they stop to produce the salt. Because the process of crystallization of salt (from seawater), is totally dependent on the sun’s heat.
These are the land of salt in Lasem, when I visited Rembang. Unfortunately I did not come in at harvest time.