to make a roasted chicken sandwich at McDonald boost that best competes with Chick-fil-A, it took something extra in the recipe MSG, the flavor enhancer that has both supporters and opponents. The largest restaurant chain in the world is currently testing chicken sandwiches, but also drew concerns about the health of consumers with sodium glutamate, an ingredient that gives a spicy flavor. The additive is elsewhere in the test sausage, soup bases and other sandwiches crispy chicken fillet on the new test in Knoxville, Tennessee and Houston, as well as appearing popping up. The chicken is a big problem in fast food. Americans eat more of it each year than any other meat, and consumption is growing. McDonald’s for years has tried to make a roasted chicken sandwich to rival Chick-fil-A, the Atlanta chain with cult status. Chick-fil-A also used MSG in his chicken classic sandwich among other menu items, as well as Popeyes Louisiana Kitchen, which introduced a sandwich last summer in the midst of a frenzy of social media sold. “We are always our customers, our menu offering felt in terms of” a spokesman for McDonald’s said in response to questions about his addition of MSG. The comments and test results will inform their future decisions, he said. A representative for Chick-fil-A has declined to comment, while representatives Popeyes did not respond to a request for comment. Positive Response MSG is a flavor enhancer used for decades after commercial production began in the early 20th century. And ‘now widely it associated with take-out food and processed soups and meat. While the part is generally safe, according to the Food and Drug Administration, the use is controversial and some people complain about bad side effects such as headaches, numbness and heart palpitations. McDonalds has MSG in products not currently on the national menu lists and ingredients in its national menu on their website, the company says. McDonald’s customers in Houston and Knoxville have his sandwich Crispy Chicken Deluxe and Crispy Chicken Sandwich offered responds positively to the test in more than 230 stores, according to the spokesman. The process will continue for a couple of weeks. And ‘the examination also a Portuguese sausage and a soup base with the addition of MSG in selected locations in Hawaii and crispy chicken fillets over in Augusta, Georgia, and Seattle. “We are able to enjoy the taste of our food, thus increasing our customers all over the real world and their own use, quality ingredients,” said McDonald nutritional Chief Cindy Goody in a statement. “We are excited about our delicious food and great attention to the menu options offer quality for our customers, which are produced responsibly and with respect.” Over the past four years, the company based in Chicago has proven its ingredients, including artificial preservatives clean removal from his chicken nuggets. It ‘also move its egg supply US cage free. -With the help of Lisa Wolfson.