The DeMent family has been producing top-quality tomato sauce for over 70 years. In 1934 the family set up The DeMent Grill, a small restaurant in Oswego, N.Y., to bring a taste of the home country to the new country, and the family’s traditional sauces proved so popular that customers would ask to take sauce home. Seeing the potential in retail, the DeMents eventually transitioned into...