For more than a century, the heart and soul of Downtown Los Angeles has been an old-school, open-air food market in the Homer Laughlin Building at 3rd and Broadway/Hill Streets. Grand Central Market was where generations of bargain hunting Angelenos shopped for spices, flowers, baked goods, specialized cuts of meat, farm-fresh produce and select prepared delicacies, both local and imported. Here, multicultural Los Angeles simmered in a vibrant and beautiful melting pot, where colorful characters plied their trade and influenced…