From the instant one enters David’s Italian Market, their taste buds spring a leak. Aromas from freshly baked stuffed mushroom caps, chicken cutlets, meatball parmigiana sandwiches and more act like a plumber’s wrench busting open a rusty water pipe. “Our food is good and business is good,” said manager Margo Cottone on Monday. On Small Business Saturday, business is considerably better. “We have a 25-to-35% jump in business that day,” Cottone said. That day is this Saturday in Emmaus, throughout the Greater Lehigh Valley and the nation. “We make a big push this weekend with gift certificate specials tied to Small Business Saturday and the rest of the month,” Cottone said. Small Business Saturday was created in 2010 by credit card company American Express as an attempt to promote economic recovery and consumer spending in the wake of the 2008 financial crisis, which hurt many small retailers.