True or false: Fat on a beef carcass that was grass-fattened has a characteristic color of white.

The assertion that fat on a beef carcass that was grass-fattened has a characteristic color of white is false. Grass-fattened beef typically has fat that is more yellow in color rather than pure white. This is primarily due to the carotenoids found in the grass, which are pigments that contribute to the yellow hue of the fat. The animal's diet plays a significant role in the development and coloration of its fat; thus, a diet high in grass will lead to a noticeable yellowing of the fat compared to cattle that are grain-finished, which tend to have whiter fat.

While the breed may influence fat characteristics and the specific coloration, the primary factor in the coloration of fat is indeed the diet. Therefore, the correct assessment of the statement regarding the fat coloration of grass-fattened beef is that it is not exclusively white, making the answer false.