📖 Instructions

1. **Prep Your Veggies:** Begin by getting all your vegetables ready. Peel about 2 pounds of Russet or Yukon Gold potatoes. Cut them into roughly 1/2-inch to 3/4-inch cubes. Try to keep them fairly uniform in size so they cook evenly. Dice one medium yellow onion finely and chop two stalks of celery into small pieces. Mince about 2-3 cloves of garlic. Having everything prepped before you start cooking, a technique called "mise en place," makes the whole process so much smoother.
2. **Render the Bacon (Optional but Recommended):** If you're using bacon, slice about 4-6 strips into small pieces. Place them in your large stockpot or Dutch oven over medium heat. Cook until crispy, stirring occasionally. This usually takes about 5-7 minutes. Once golden and crisp, use a slotted spoon to remove the bacon bits and set them aside on a plate lined with paper towels. Leave about 1-2 tablespoons of bacon fat in the pot; this adds incredible flavor! If skipping bacon, add 1-2 tablespoons of butter or olive oil to the pot instead.
3. **Sauté the Aromatics:** To the reserved bacon fat (or butter/oil) in the pot, add your diced onion and chopped celery. Cook over medium heat, stirring occasionally, until the vegetables soften and become translucent, which usually takes about 5-8 minutes. Don't rush this step, as softening the vegetables properly develops their sweetness.
4. **Add Garlic and Flour:** Stir in the minced garlic and cook for another minute until fragrant. Be careful not to burn the garlic; it can turn bitter quickly. Now, sprinkle 1/4 cup of all-purpose flour over the sautéed vegetables. Stir constantly for 1-2 minutes, allowing the flour to cook out its raw taste. This creates a roux, which will help thicken our soup beautifully.
5. **Build the Broth Base:** Slowly whisk in 4 cups of chicken broth (or vegetable broth for a vegetarian option). Add it gradually, a little at a time, whisking vigorously to prevent any lumps from forming. Once all the broth is incorporated, the mixture should be smooth and start to thicken slightly.
6. **Simmer the Potatoes:** Add your cubed potatoes to the pot. Stir gently to combine everything. Bring the soup to a gentle simmer, then reduce the heat to medium-low, cover the pot, and let it cook for 15-20 minutes, or until the potatoes are fork-tender. You should be able to easily pierce them with a fork.
7. **Create Creaminess:** Once the potatoes are tender, it’s time to get creamy! You have a choice here: for a smooth soup, use an immersion blender right in the pot, blending until it reaches your desired consistency (I like to leave a few small chunks for texture). If you don't have an immersion blender, carefully transfer about half of the soup to a regular blender (be sure to vent the lid to allow steam to escape and hold it down with a towel!), or mash directly in the pot with a potato masher for a chunkier soup. Return any blended soup to the pot.
8. **Stir in Dairy and Cheese:** Reduce the heat to low. Stir in 1 cup of whole milk and 1/2 cup of heavy cream. Now for the star: add 2 cups of shredded sharp cheddar cheese. Stir continuously until the cheese is completely melted and the soup is smooth and luscious. Do not let the soup come to a rolling boil after adding the dairy and cheese, as this can cause it to curdle. Just gentle simmering to warm it through.
9. **Season and Serve:** Taste the soup and season with 1/2 teaspoon salt and 1/4 teaspoon black pepper, or to your preference. Remember, the bacon and broth already add some saltiness, so adjust accordingly. If you like a little kick, a pinch of cayenne pepper is a secret weapon! Ladle the hot soup into bowls.
10. **Garnish and Enjoy:** Top each serving with your reserved crispy bacon bits, a sprinkle of fresh chopped chives or green onions, and maybe an extra dash of shredded cheddar. A dollop of sour cream is also a fantastic addition! Serve immediately and soak in that comforting warmth. Seriously, it's pure bliss.