I filtrati dolci
Monografia della filtrazione dei mosti e della preparazione dei cosidetti "filtrati dolci" e "lambiccati".
"I filtrati dolci" by Giuseppe De-Astis is a monograph written in the early 20th century. The work focuses on the filtration of must and the preparation of sweet and "lambiccati" filters, which are important in the field of enology. De-Astis, as a director of a reputed experimental winery, presents a detailed examination of various methods and practices in the sweet filtration industry, providing insight into grape varieties, processes, and historical developments related to this specialized production. The opening of the work introduces the concept of "filtrato dolce," outlining its definition and classification in the context of Italian enotechnical and commercial practices. The text explains the historical context of sweet filtering, emphasizing the influence of micro-organisms in fermentation processes and the importance of specific filtration techniques to preserve the sweetness of the must. De-Astis elaborates on the characteristics of both white and red sweet filters, detailing the methods employed for their production, the types of grapes used, and the impact of these practices on the quality and commercial viability of the products.