sentence: other fillings offered in san francisco taquerias include birria ( goat meat ) , camarones diablos ( extra-spicy shrimp ) , carne deshebrada ( shredded beef with red chile sauce ) , carne molida ( ground beef ) , chicharrón ( fried pork rinds , stewed ) , barbacoa ( marinated lamb , sometimes pork is substituted ) , pescado ( fish , usually fried or grilled tilapia and sometimes salmon ) , picadillo ( ground beef with chopped chiles and tomatoes ) , mole ( chicken stewed in a chile and chocolate sauce ) , nopales ( prickly pear cactus ) , and tripas ( beef tripe ) .