Step inside Kay’s Supermarket and Delicatessen on Golders Green Road on a Thursday and you’re likely to find a curious sight. Three cashiers will be sitting at their cash registers serving a few customers while a long line of people snakes toward a single cash register manned by a dignified older woman. Somehow despite the advances of modern technology bar codes and scanners the longtime customers at Kay’s still seek out the personal touch of proprietor Mrs. Helen Langberg. “The ladies all line up telling me about their aches and pains ” she says. “They ask me about recipes how to stop the children crying at night — all sorts of things.” Mr. Avigdor Langberg smiles. “The workers are all used to it already ” he says. “They try encouraging the customers to move to the next till but most of them say they’ll wait for my wife. She’ll remember to inquire after one customer’s knee replacement or the other’s einekel’s bar mitzvah.” Nearly five decades after the Langbergs took the helm of the smallKay’s delicatessen growing it far beyond the original small confines they’ve managed to retain the personal touch that first gained them a following. “We have young grandchildren who come into our shop to buy nosh ” saysHelen “and I can tell them ‘Look this is the candy your grandmother used to buy when she was your age.’ ”