Tatar (steak tartare) is a dish made from raw minced beef, served with egg yolk, onion, parsley, salt and pepper.

While originally it comes from France, it is popular across Europe. The recipe below is for Polish version, where it is traditionally served as an appetizer with diced onions, pickled mushrooms, egg yolk, spices.

Wash in water, then finely chop or grind the beef.

Wash eggs with water or blanch them to make sure there is no salmonella.

Separate yolks from the whites and put them to the bowl with meat.

Finely chop onions, pickled gherkins, and pickled mushrooms.

Serve with some bread and frozen cold Polish vodka.

https://polishfoodies.com/easy-polish-tatar-recipe/