"Key ingredients: Food as Ethnic Identifier," a traveling Smithsonian exhibit that explores America by food, is currently on display at the Sam Azeez Museum of Woodbine Heritage.

Jane Stark, executive director of the museum, says the exhibit examines how culture, ethnicity and tradition influence foods and flavors everyone enjoys. It demonstrates how food on the American table is rooted in centuries of borrowing and sharing between people across generations and cultures.

The exhibition coverage features New Jersey's rich heritage of food innovation and tradition from the Pinelands bogs where Elizabeth White cultivated the commercial blueberry to the Newark factory where M&Ms were invented, and the nonalcoholic grape juice created in Vineland by Thomas Bramwell Welch.

"Key Ingredients" traces how immigration and technology have changed eating habits throughout 500 years of American history. The exhibit is on display through the end of August, Monday thorugh Friday from 10 am. to 4 p.m., Saturday 2 to 4 p.m. and Sunday noon to 4 p.m. For information call 861-5355.