Studies have shown that offal is good, even necessary for our health, and contains vitamins A and C. An excellent source of protein, it also contains vitamins Ba, B2, B3, B5, PP, B6, B8 and copper.
Rich in protein: 1 tin of beef tongue in Madeira wine sauce (for 1
person) provides 50% of the NRV (nutritional reference value).

Heme iron for women… Offal contains heme iron which has a much higher absorption factor in the body than the non-heme iron found in cereals or vegetables…
Zinc for men… 1 tin of beef tongue in Madeira wine sauce provides 50% of the RDA (recommended daily amount) of zinc. The modern population is experiencing a slight deficiency of zinc, expressed mainly in irritability and a drop in male fertility…
Vitamin B12 for children… Vitamin B12 is not found in the plant world. However, it is found in large quantities in beef tongue and is important for cell growth.

The canning process (preservation of foods) guarantees a higher vitamin content than when home cooking a food which has already been stored for some time: products bought from the shops lose 17 to 47% of their vitamins during cooking, while canning preserves at least 70% of vitamins.