EJ’s Luncheonette serves matzo ball soup in the style of an American diner-meets-Jewish deli, with a clear chicken broth and a traditional matzo ball.[3][7][22] The soup is typically prepared to be comforting and straightforward, matching the restaurant’s broader approach to homestyle cooking.[3][22] The matzo ball tends to be moderate in size and gently textured, making the bowl an easy starter or a light meal when paired with other dishes.[3][7] Editorial guides group EJ’s with other Upper East Side spots when mapping out where to find reliable matzo ball soup in the neighborhood.[3][7][22]