A glossary of basic Yiddish on the menu defines mishpocheh (family) as “trouble makers.” Such good-natured cornball can be traced to owner Art Ginsburg, a mensch of the L.A. deli business. Clean, uncluttered, and cool, Art’s represents a kind of deli nirvana. A well-tended cold meats section stands by the door, and walls hung with pictures of sandwiches envelop happy diners. Generations congregate over long breakfasts here. Art’s serves the city’s best chopped liver, resplendent when combined with corned beef in one of the deli’s classic sandwiches. Frothy egg creams and milk shakes are superior; nothing widens a child’s eyes more than a ribbon of chocolate syrup dissolving in the soda water of a classic phosphate.