Stepping into one of the retail locations of Nourish Specialty Foods Market, Café and Catering in Rehoboth Beach, Del., is like stepping into a foodie’s paradise. Every shelf and cooler is filled with fresh, healthy, organic or unique options, such as the house-made Charred Tomato Salsa or potato chips that are “popped” instead of fried or baked. But the concept of Nourish is about far more than just good food.