Italian Penicillin Soup

I grew up with brothy, garlicky soups that felt like a warm hug — this Italian Penicillin Soup is one of those comforting bowls. It’s a simple, healing-style soup built on clear chicken broth, soft diced mirepoix, aromatic herbs and a squeeze of lemon to brighten the finish. People make it when they want something restorative (think cold season, late nights, or easy weeknight dinners) because it’s quick, light, and forgiving. I like it as a “soup pantry” recipe: little effort, big comfort. For another take with slightly different proportions, see this Savor & Simple post.

Why you’ll love this dish

This soup is quick to pull together and gentle on the stomach, which is why cooks turn to it when they want something both nourishing and fast. It’s budget-friendly — mostly pantry staples — but the lemon and garlic lift it beyond plain broth. Make it on a sick day, for a light lunch, or as the first course of a casual Italian meal. The optional noodles and greens let you stretch it into a heartier one-pot supper when needed.

Step-by-step overview

Start by warming good-quality chicken broth. Soften diced onions, carrots and celery in that broth until tender. Add garlic and dried herbs to build aroma. If you want noodles, stir them in and let them finish cooking in the hot broth. Toss in spinach or kale at the end so it wilts without overcooking. Finish with salt, pepper and a squeeze of lemon to brighten the whole pot. Expect 20–30 minutes from stove to bowl.

What you’ll need

• 4 cups chicken broth
• 1 cup diced carrots
• 1 cup diced celery
• 1 cup diced onions
• 2 cloves garlic, minced
• 1 teaspoon dried thyme
• 1 teaspoon dried oregano
• Salt and pepper to taste
• 1 cup cooked noodles (optional) — use small shapes like ditalini or broken spaghetti; use cooked noodles to avoid over-thickening the broth
• 1 cup spinach or kale (optional) — baby spinach wilts fastest; chop kale small if using
• Juice of 1 lemon (optional) — adds brightness; start with half and taste

Notes: You can substitute low-sodium chicken broth if watching salt. For a vegetarian version use a robust vegetable broth and replace cooked shredded chicken with white beans for protein.

Step-by-step instructions

1. Pour the chicken broth into a large pot and set it over medium heat. Bring it to a gentle simmer.
2. Add the diced carrots, celery and onions. Let them simmer until soft and translucent, about 8–10 minutes. Stir occasionally.
3. Stir in the minced garlic, thyme and oregano. Cook for 30–60 seconds until fragrant. Season with salt and pepper.
4. If you like noodles, add the cooked noodles now and heat through for 5–7 minutes so they absorb some broth flavor.
5. Add the spinach or kale and cook until the greens are just wilted — about 1–2 minutes for spinach, a few more for kale.
6. Taste and adjust seasoning. Finish with the juice of half a lemon, then add more if you want a brighter edge.
7. Ladle into bowls and serve warm.

Best ways to enjoy it

This soup is versatile when it comes to serving. Pair it with crusty bread or garlic toast to sop up the broth. Serve alongside a green salad and a simple antipasto for a light Italian-style meal. For a heartier bowl, top with shredded rotisserie chicken and a sprinkle of grated Pecorino. Drizzle a little extra virgin olive oil or add red pepper flakes for a spicy kick.

Storage and reheating tips

Cool the soup to room temperature within two hours, then refrigerate in an airtight container for up to 3–4 days. To freeze, leave out any noodles or delicate greens (add them when reheating), then freeze the broth and vegetables in a freezer-safe container for up to 2–3 months. Reheat on the stovetop over medium heat until steaming, and always bring leftovers to at least 165°F (74°C) for food safety. If frozen, thaw overnight in the fridge before reheating for best texture.

Pro chef tips

• Use low-sodium broth so you can control the salt level as the soup reduces.
• Dice the vegetables uniformly for even cooking.
• If you want a silkier broth, briefly purée a cup of the soup and stir it back in for body without cream.
• Add the lemon last — acidity dulls if boiled too long.
• For an herbal lift, finish with chopped fresh parsley or a teaspoon of finely grated lemon zest. For another approach to this recipe, check this alternate Savor & Simple version.

Creative twists

• Make it vegetarian: swap to vegetable broth and add white beans or cannellini for protein.
• Add protein: shredded chicken, small meatballs, or a soft-poached egg on top.
• Spice it up: stir in a teaspoon of red pepper flakes or a splash of hot sauce.
• Grain swap: use cooked farro or rice instead of noodles for a nuttier texture.
• Winter comfort: add diced potatoes and simmer longer for a more filling soup.

Common questions

Q: How long does this take to make?
A: Active time is about 15–20 minutes; total time is roughly 25–30 minutes depending on whether you cook noodles from scratch.

Q: Can I make this soup vegetarian?
A: Yes. Use a rich vegetable broth and add beans, mushrooms, or grains for substance.

Q: Are the noodles necessary?
A: No. They’re optional. Cooked noodles bulk the soup up but will absorb broth in storage, so consider adding them fresh when reheating leftovers.

Q: How long will leftovers keep?
A: Refrigerated: 3–4 days. Frozen (without noodles/greens): 2–3 months. Reheat to 165°F for safety.

Q: Can I use fresh herbs instead of dried?
A: Absolutely. Use three times the amount of fresh herbs as dried (so about 1 tablespoon each fresh thyme/oregano) and add most of them in at the end to preserve brightness.

Conclusion

If you’d like to compare this version against another clear recipe for inspiration, see the Italian Penicillin Soup Recipe for a closely related take and tips from another source: Italian Penicillin Soup Recipe.

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