Open the canned clams and drain and reserve their liquid in a separate container.
Heat a large dutch oven or stock pot over medium-high heat. Add the bacon strips and cook until crispy on both sides, about 5 minutes. Remove bacon from pot and set aside.
Toss in the chopped onion and celery. Cook until the onion is translucent, around 5 minutes, stirring occasionally.
Toss in the garlic, nutmeg, cloves, cinnamon and ginger. Stir well and cook for 30 seconds before adding the four and cooking an additional 30 seconds, stirring the entire time.
Pour in the clam juice (the reserved canned juice and the bottles of juice should be between 4-5 cups), and mix in the pumpkin puree. Bring the mixture to a light boil before adding the chopped potatoes and squash to the pot, along with the bay leaf. Cook for about 20 minutes, stirring occasionally, until the potatoes and squash are just about fork tender.
IF USING FRESH CLAMS: Add the fresh clams to the pot, stir well and place the lid on. Allow to cook for 5-10 minutes, until all of the clams have fully opened. If not using fresh clams, skip this step.
Toss in the reserved chopped canned clams, cream, and parsley. Add your pepper and salt (don't skip this step, salt is very important in this recipe. Start with 1 tsp, and add more to your liking).
Chop up the reserved bacon and sprinkle it over the top of each bowl. I recommend serving with a side of bread. Enjoy!