A city icon in its own tasty right, Katz’s Deli this weekend will celebrate 125 years of serving up pastrami, corned beef, brisket and more on the Lower East Side. For over a hundred years, Katz’s has been serving monster piles of salty, fatty, peppery smoked beef between mustard-slathered slices of rye bread. There may be better pastrami sandwiches in this city, but this is the one that is most beloved by New Yorkers and sandwich enthusiasts around the world. The restaurant will be celebrating the anniversary all weekend, including a Shabbat dinner Friday, visits from celebrity chefs and a pastrami eating contest Sunday. Katz’s says it sells up to 20,000 pounds of meat a week. NBC’s Ben Aaron went down to celebrate.