CNN  —  In Flushing, Queens, fresh produce, soy sauces and seaweed-flavored snacks line the aisles at Chang Jiang Supermarket. Chang Jiang sits amid a row of stores in this majority-Asian community, where colorful storefronts feature signs in Chinese and fresh fruit is sold in boxes on the sidewalk. Local grocers are often the lifelines of the communities they serve. Indian grocers offer cake rusk biscuits to accompany chai tea, and Chinese grocers reliably keep red jars of Lao Gan Ma chili oil