Fish served in a sorrel sauce is a staple of French cuisine and is especially good with salmon fillets. This sauce has a distinct lemony flavour.
Sorrel soup is a soup made from water or broth, sorrel leaves, and salt. Other possible ingredients are egg yolks or whole eggs (hard boiled or scrambled), potatoes, carrots, parsley root, and rice. It can be served hot or cold, and is usually garnished with sour cream.
Zupa Szczawiowa (sorrel soup) is a popular Polish recipe in the springtime when sorrel is at its most tender. Sorrel soup is made in many different ways. This is just one variation.