Quark (dairy product) branded quark, as well as other brands of quark. Quark (dairy product) Quark or quarg is a type of fresh dairy product made by warming soured milk until the desired amount of curdling is met, and then straining it. It can be classified as fresh acid-set cheese. Traditional quark can be made without rennet, but in modern dairies small quantities of rennet are typically added. It is soft, white and unaged, and usually has no salt added. It is traditional in the cuisines of German-speaking, Slavic and Scandinavian countries. Dictionaries sometimes translate it as curd cheese, cottage cheese, farmer cheese
Up quark Up quark The up quark or u quark (symbol: u) is the lightest of all quarks, a type of elementary particle, and a major constituent of matter. It, along with the down quark, forms the neutrons (one up quark, two down quarks) and protons (two up quarks, one down quark) of atomic nuclei. It is part of the first generation of matter, has an electric charge of + "e" and a bare mass of .. Like all quarks, the up quark is an elementary fermion with spin , and experiences all four fundamental interactions: gravitation, electromagnetism, weak interactions, and strong