For Emmanuel Gonzalez Perez, the Mexican dish carne en su jugo — meat in its juices — is a reminder of the home he hasn't been able to return to in over 20 years. Gonzalez Perez, 27, of Sacramento, California, has taken his family’s recipe to “No Borders, Just Flavors!” — a YouTube cooking competition. Produced by United We Dream, the country’s largest youth-led immigrant advocacy network, the coming show pits a young immigrant cast competing against one another as they showcase family recipes. Contestants from first- and second-generation immigrant backgrounds prepare meals from their families’ heritages, including salted egg…