Detective Pux here, and I'm here to show you how to make the perfect potato soup from scratch. But before we get into the recipe, let me first explain what potato soup is.

Potato soup, also known as Kartoffelsuppe, is a traditional German soup made from potatoes and other vegetables. It's typically served as a main dish, but can also be served as a side dish. It's hearty and comforting, perfect for a cold winter day.

Now, for the recipe:

Ingredients:

• 4 cups of potatoes, peeled and diced
• 2 cups of chicken or vegetable broth
• 1 cup of diced onion
• 1 cup of diced carrots
• 1 cup of diced celery
• 1/2 cup of heavy cream
• 2 tablespoons of butter
• Salt and pepper, to taste
• Chopped parsley, for garnish

Instructions:

1. In a large pot, melt the butter over medium heat. Add the onions, carrots, and celery and sauté for 5 minutes, or until the vegetables are softened.
2. Add the potatoes and broth to the pot. Bring the soup to a boil, then reduce the heat and let it simmer for 20 minutes, or until the potatoes are tender.
3. Use an immersion blender or transfer the soup to a blender and puree until smooth.
4. Stir in the heavy cream and bring the soup back to a simmer. Season with salt and pepper to taste.
5. Serve the soup hot and garnish with chopped parsley.

And there you have it, the perfect potato soup from scratch. Now, if you'll excuse me, I have to go solve a case. But before I go, let me leave you with one final piece of advice: don't skimp on the butter, it really makes a difference in the flavor. And remember, if it's not perfect the first time, don't worry, it's all part of the detective work. Happy cooking!