Queso Tierno Unide Mezcla 150 g is identified as a soft mixed cheese from the brand Unide. The specified amount is 150 g. This is the only presentation described in the provided information; no packs, boxes, or multiple units are mentioned. The term "mixed" is not accompanied by a list of the types of milk used or their proportions. Similarly, the mention of "soft" does not include a specific aging time or details about the manufacturing process. Therefore, no specific characteristics of flavor, texture, or composition are attributed to the product that are not documented. No list of ingredients, nutritional table, or country/region of origin is provided. There are also no storage conditions or consumption instructions indicated. To know these details and the storage instructions once opened, the product label should be consulted.