In a Dutch oven saute' garlic, onion, oregano, nutmeg, pepper with butter and oil until onion is soft. Add undrained spinach, cook 5 minutes. Pour clam juice into a blender. Spoon in 1/2 sauteed spinach mixture and 1/4 salmon. Whip until pureed. Pour back into Dutch oven. Add chicken broth and the rest of the salmon, chunked. Simmer 5 minutes.