A solid cut from the bottom round or rump is marinated for three or four days, or as many as ten, before cooking.

Red wine vinegar and wine typically form the basis of the marinade, which also includes earthy aromatic spices such as peppercorns, juniper berries, cloves, nutmeg, and bay leaves and less commonly coriander, mustard seed, cinnamon, mace, ginger, and thyme.
The marinade may also include vegetables such as onions, celery, and carrots.
The acidic marinade helps tenderize the meat before it cooks.
Buttermilk is also used as a marinade in certain regional varieties.

It is frequently advised to marinate the meat in an earthenware, glass, plastic, or enamel container rather than one made of bare metal, as the acidic marinade would react with a metal vessel during the extended marinating.
A solid cut from the bottom round or rump is marinated for three or four days, or as many as ten, before cooking.
Red wine vinegar and wine typically form the basis of the marinade, which also includes earthy aromatic spices such as peppercorns, juniper berries, cloves, nutmeg, and bay leaves and less commonly coriander, mustard seed, cinnamon, mace, ginger, and thyme. The marinade may also include vegetables such as onions, celery, and carrots. The acidic marinade helps tenderize the meat before it cooks. Buttermilk is also used as a marinade in certain regional varieties.
It is frequently advised to marinate the meat in an earthenware, glass, plastic, or enamel container rather than one made of bare metal, as the acidic marinade would react with a metal vessel during the extended marinating.
Sauerbraten