Alcarraza is a Spanish name of Arabic or moorish origin for a porous earthenware water pitcher which is suspended in the shade, in a draughty place. It is used for cooling liquids. From the Arabic al karaz (pitcher).
"A quarter of an hour." A soup of mussels, onions, ham, parsley and rice, with water and the cooking liquor from the mussels, served with the mussels and a garnish of hard boiled egg.