Strong-flavor milk and preparation method thereof

The invention provides strong-flavor milk and a preparation method thereof. The preparation method comprises the following steps: (1) fat separation: carrying out fat separation on raw milk to obtain single cream and skimmed milk; (2) ultrafiltration: performing ultrafiltration operation on the skimmed milk to obtain ultrafiltration trapped fluid and ultrafiltration penetrating fluid; (3) reverse osmosis (or nanofiltration process): performing reverse osmosis operation on the ultrafiltration penetrating fluid to obtain reverse osmosis trapped fluid and reverse osmosis penetrating fluid; and (4) component recombination: mixing the ultrafiltration trapped fluid, the reverse osmosis trapped fluid, the reverse osmosis penetrating fluid and the single cream. The preparation method can adapt to production of various products (products with different protein contents, different fat contents and different lactose contents can be produced), for example, concentrated milk with high protein content and concentrated milk