Consumers’ growing interest in chef-inspired home cooking is driving the development of flavorful butters, as such cooking aids and condiments provide a culinary touch to even the simplest recipes. Chicago-based Isola Imports Inc., is the most recent company to offer a line of all-natural, hand-crafted gourmet butters. Sold in 3.5-ounce clear plastic containers to convey the gourmet ingredients the butters contain, varieties are: Basil Pesto, Blue Cheese, Italian Truffle, Roasted Garlic, Porcini and Sundried Tomato.