From the spanish wiki:

Keperí consists of a piece of beef (where it gets its name from) that is cooked in an oven or fried. 7] The meat is characterized by being very soft and is accompanied with rice with cheese, fried yucca and salad.

Fried yuca:

Because yuca is packed with natural starches, it develops a much thicker, glass-like outer crust when fried. It stays crispy far longer than a standard potato fry.

This is all new to me :) Looks like the sausage on the white stuff is fried yuca? Is the white stuff rice with cheese? what kind of cheese?