Increased production and export of products with high added values, e.g. long-ripened hard cheeses, are considered important steps for a positive development of the Swedish dairy sector. Increased investment in Swedish premium cheese will, however, require increased volumes of high quality raw milk and will not allow the current variation in sensory quality and ripening time. In this project we develop new knowledge about the microflora flow from farm to cheese. With techniques based on DNA sequencing we study how on-farm factors in production and handling of silage affect the microflora of forages, raw milk and cheese and identify bacteria affecting ripening time, taste and texture of the long-ripened cheese. In the project dairy farmers, cheese industry, advisory service and researchers collaborate to develop and economically evaluate new concepts for quality assurance of forages, raw milk and long-ripened cheese with the aim to increase the profitability in the whole value chain.