What is fresh yeast used for?

it is yeast that is still 'living' - as opposed to the dried yeast sold in sachets or pots, that must be re-hydrated with water before it reactivates. Fresh yeast has a four day shelf-life, which makes it inconvenient for homebakers (it's still alive after four days, but the quality declines). Fresh yeast is sold in cubes, and is usually creamed with flour, sugar or butter before being used in a recipe. Sometimes it is just crumbled in.