This document discusses the potential for developing a salt cluster business model in Aveiro, Portugal. It provides background on efforts to rehabilitate old salt buildings and regenerate the relationship between the city and its lagoon. It analyzes the history and current state of salt production in Aveiro, which has declined dramatically. Recent initiatives related to salt are highlighted, along with challenges and opportunities for increasing salt production and economic activities connected to the salt industry and lagoon. The document proposes developing a "Salt Cluster" business model to connect different industries like food, cosmetics, tourism and more to promote the sustainable development and branding of Aveiro salt.