Anna Pump, a chef and a cookbook writer whose national reputation for deceptively simple gourmet fare emanated from her place of business, the Loaves & Fishes Foodstore, a humble-looking fixture of high-end living in the Hamptons on Long Island, died on Monday after she was hit by a pickup truck in Bridgehampton, N.Y. She was 81.

Ms. Pump was struck as she crossed a street and taken to a hospital in Southampton, where she was pronounced dead, said her daughter, Sybille van Kempen, a chef and a co-owner with her mother at Loaves & Fishes.

The driver of the pickup was identified by the police as Luis Ortega, 40. He was charged with driving without a license, failure to yield to a pedestrian in a crosswalk and disabling a court-ordered interlock device on his truck that is meant to prevent drunken driving.

Loaves & Fishes, in Sagaponack, N.Y., is known for its breads, desserts, cheeses, salads and other prepared takeout foods — not to mention its well-heeled (and sometimes celebrity) clientele and premium prices. The lobster salad has been famously priced at $100 a pound.