Mediterranean cuisine to Catalonia and Murcia along Spain's Mediterranean coast. It comes in many versions, and may contain a mixture of chicken, pork, rabbit, or shellfish, sautéed in olive oil in a large shallow pan, with vegetables, and typically round-grain rice (often of the local "albufera", "arròs bomba", "sénia" varieties or similar) cooked to absorb the water and coloured with saffron. The dish may be varied with artichoke hearts, peas, sweet peppers, lima beans, string beans, or sausages. Anise is used around the Mediterranean to flavour spirits including French "pastis" and "absinthe"; Greek "ouzo"; Bulgarian "mastika"; Italian "sambuca"; Spanish "anísado"; Turkish "rakı";
Flavour (particle physics) description of the flavour symmetry is described by a chiral group . If all quarks had non-zero but equal masses, then this chiral symmetry is broken to the "vector symmetry" of the "diagonal flavour group" , which applies the same transformation to both helicities of the quarks. This reduction of symmetry is a form of "explicit symmetry breaking". The amount of explicit symmetry breaking is controlled by the current quark masses in QCD. Even if quarks are massless, chiral flavour symmetry can be spontaneously broken if the vacuum of the theory contains a chiral condensate (as it does in low-energy