Italian Penicillin Soup

A broth this loaded with garlic and deepened with a simmered parmesan rind earns its nickname honestly, the kind of soup people reach for the moment a scratchy throat shows up. Italian Penicillin Soup leans heavily on garlic, far more than a typical chicken soup, along with wilted greens and small pasta for something that feels genuinely restorative rather than just warm.

I started making this after a friend swore it kicked her cold faster than anything else she had tried, and while I cannot promise any actual medicinal powers, the broth alone is worth making on a regular basis. Saving parmesan rinds in the freezer specifically for this soup turned out to be the detail that took it from good to genuinely memorable, infusing the broth with a savory depth plain chicken stock never quite reaches on its own. Whether or not it actually fights off anything, this Italian penicillin soup has become the first thing I make the moment anyone in the house starts sniffling.

Why You’ll Love This Recipe

• Deeply garlicky broth, the real signature of this soup
• Rich, savory depth from a simmered parmesan rind
• Ready in about 45 minutes, mostly hands off simmering time
• Genuinely comforting, the kind of soup people make when someone is under the weather
• Naturally adaptable, from the greens to the protein you use
• A great way to use up parmesan rinds instead of tossing them

Quick Information

• Prep Time: 15 minutes
• Cook Time: 30 minutes
• Total Time: 45 minutes
• Servings: 6
• Difficulty: Easy
• Calories: 280 per serving
• Important Tool: A large pot or Dutch oven
• Best For: Cold and flu season, cozy dinners, or whenever garlic feels like the answer
• Course: Soup
• Cuisine: Italian
• Category: Soups & Salads

Nutrition Information

• Calories: 280
• Protein: 22g
• Carbohydrates: 24g
• Fat: 10g
• Fiber: 2g
• Sugar: 2g
• Sodium: 680mg
• Serving Size: About 1 1/2 cups
• Servings Per Recipe: 6

This Italian penicillin soup gets a solid protein boost from the shredded chicken, while the greens add fiber and a dose of vitamins that round out the bowl nicely. Using a lower sodium broth is an easy way to bring the sodium down slightly, especially since the parmesan rind already adds plenty of savory flavor on its own.

Nutrition information is an estimate calculated from standard ingredient values and will vary based on specific brands and portion sizes used.

Ingredients

For the Soup

• 2 tablespoons olive oil
• 10 garlic cloves, thinly sliced
• 8 cups chicken broth
• 1 parmesan rind
• 1 cup small pasta, such as ditalini or orzo
• 2 cups shredded cooked chicken
• 4 cups chopped escarole or baby spinach
• 1/4 teaspoon red pepper flakes
• 1 tablespoon fresh lemon juice
• Salt and black pepper, to taste

For Serving

• Grated parmesan cheese
• Fresh parsley, chopped
• Crusty bread

Ingredient Notes: Ten cloves of garlic may look like a lot, but that generous amount is really what gives this Italian penicillin soup its signature flavor, so resist the urge to scale it back. A parmesan rind, saved from the end of a block of cheese and kept in the freezer, simmers right into the broth and adds a savory depth that is hard to replicate any other way.

Tip: If you do not have a parmesan rind on hand, a generous handful of extra grated parmesan stirred in near the end adds a similar, if slightly less concentrated, savory depth.

Equipment Needed

• Large pot or Dutch oven – simmers the garlic, broth, and parmesan rind together
• Knife – for thinly slicing the garlic
• Ladle – for serving the finished soup into bowls
• Tongs or a fork – for removing the parmesan rind before serving

Practical Tip: Keep a small bag in your freezer specifically for parmesan rinds as you finish off blocks of cheese, so you always have one ready the next time you want to make this soup.

Preparation

Before you start, thinly slice your garlic so it has plenty of surface area to release flavor into the oil. Shred your cooked chicken and chop your escarole or spinach so everything is ready to add once the broth starts simmering.

Pull your parmesan rind from the freezer if that is where you keep it, since it goes directly into the simmering broth without needing to thaw first.

Step by Step Instructions

1. Sauté the garlic. Heat the olive oil in a large pot over medium heat and add the sliced garlic, cooking for 2 to 3 minutes, stirring often. Watch this step closely, since garlic that browns too far turns bitter almost instantly, and that bitterness carries through the entire pot of broth. You want the garlic softened and lightly golden, never deeply browned.
2. Add the broth and parmesan rind. Pour in the chicken broth and add the parmesan rind, bringing the mixture to a simmer.
3. Simmer to build flavor. Let the broth simmer for 10 minutes, allowing the parmesan rind to soften and infuse the broth with flavor.
4. Cook the pasta. Add the pasta directly to the pot and cook according to package directions, usually 8 to 10 minutes, until al dente.
5. Add the chicken and greens. Stir in the shredded chicken and chopped escarole or spinach, simmering for 2 to 3 minutes, just until the greens wilt but still look vibrant rather than dull and overcooked.
6. Remove the rind and season. Remove the parmesan rind, then stir in the red pepper flakes, lemon juice, salt, and pepper, tasting and adjusting as needed.
7. Serve. Ladle into bowls and top with grated parmesan and fresh parsley, serving with crusty bread on the side.

Expert Tips & Tricks

• Do not skimp on the garlic. The first time I cut the amount in half to save time slicing, the broth tasted noticeably flatter, so now I always use the full ten cloves.
• Watch the garlic closely while it cooks. A few extra seconds of browning is the difference between a fragrant broth and a bitter one.
• Save parmesan rinds specifically for this soup. Keeping a bag in the freezer means you always have one ready when the craving hits.
• Add greens at the very end. A quick wilt keeps them bright and tender instead of dull and mushy.
• Finish with lemon juice right before serving. That final splash brightens the whole bowl and balances the richness of the garlic and parmesan.
• Cook pasta separately for leftovers. If you know you will have extra, cooking the pasta in its own pot and adding it to each bowl keeps it from turning soft in storage.
• Taste before adding red pepper flakes. Start with a smaller amount and build up, since heat preference varies quite a bit from person to person.

Common Mistakes & Troubleshooting

Bitter broth: This almost always comes from garlic that browned too far while sautéing. Keep the heat at medium, stir often, and pull the garlic off the heat as soon as it turns soft and lightly golden rather than deeply browned.

Bland flavor: Skipping the parmesan rind, or using too little garlic, are the most common reasons this soup tastes flatter than expected. Stick with the full amount of garlic called for, and always include a parmesan rind if you have one on hand.

Mushy pasta in leftovers: Pasta left sitting in broth continues absorbing liquid and softening well past al dente. Cook pasta separately and add it to each bowl at serving time if you know the soup will be stored for later.

Dull, overcooked greens: Adding escarole or spinach too early, or simmering it too long, leaves the greens looking faded and limp instead of bright. Stir them in during the final few minutes of cooking, just long enough to wilt.

Broth too thin: Not simmering long enough before adding the pasta and chicken can leave the broth tasting underdeveloped. Give the garlic and parmesan rind the full 10 minutes to simmer together before moving on to the next step.

Storage Instructions

• Room Temperature: Do not leave the soup out longer than 2 hours.
• Refrigerator: Store in an airtight container for up to 4 days, ideally with the pasta stored separately.
• Freezer: Freeze the broth and chicken, without pasta, for up to 3 months.
• Reheating: Reheat on the stovetop over medium heat, adding a splash of broth if the soup has thickened, until warmed through.
• Make Ahead: This soup tastes just as good, if not better, the next day once the flavors have had time to meld.
• My storage tip: I always store this Italian penicillin soup with the pasta separate from the broth, adding it to each bowl only when reheating, since it keeps the texture much closer to fresh.

Variations & Substitutions

• Extra spicy version: Increase the red pepper flakes to 1/2 teaspoon, or finish each bowl with a drizzle of chili oil, for a noticeably spicier broth.
• Mild, kid friendly version: Reduce the garlic slightly and skip the red pepper flakes for a gentler, more familiar flavor.
• Vegetarian version: Swap the chicken for a can of drained white beans or chickpeas, using vegetable broth in place of chicken broth while still keeping the parmesan rind if you eat dairy.
• Gluten free version: Use a gluten free small pasta, or swap in cooked rice, in place of the regular pasta.
• Other substitutions: Stir in a can of drained white beans along with the chicken for extra heartiness, or swap the escarole for curly kale if that is what you have on hand.

Serving Suggestions

Italian penicillin soup is filling enough on its own, but a few extras round it out.

• Bread: Warm, crusty bread for dipping into the garlicky broth
• Garnishes: Extra parmesan and fresh parsley on top of each bowl
• Soup pairing: Serve alongside chicken noodle soup if you want to offer two comforting broth based options
• Dumplings: Try alongside wonton soup for a broader soup focused spread
• Meal combinations: Pair with a simple green salad for a lighter, balanced meal

Meal Prep Tip: I regularly make a double batch of broth and chicken, freezing half without pasta, so a comforting pot of soup is only a quick simmer and a fresh batch of noodles away whenever someone in the house starts feeling run down.

Frequently Asked Questions

Can I make Italian penicillin soup ahead of time?

Yes, and it genuinely tastes even better the next day once the garlic and parmesan flavors have had time to settle into the broth. Store it in the refrigerator for up to 4 days, ideally keeping the pasta separate so it does not turn soft. You can also make the broth and chicken portion up to 3 months ahead and freeze it, adding fresh pasta whenever you are ready to serve.

Why is my garlic broth bitter?

Bitterness almost always traces back to garlic that browned too far while sautéing, since burnt garlic turns sharp and unpleasant very quickly. Keep the heat at medium, stir the garlic often, and pull it from the heat as soon as it looks soft and lightly golden rather than deeply browned.

What is a parmesan rind and where do I get one?

A parmesan rind is simply the hard, waxy edge left over once you have grated most of a block of parmesan cheese down. Rather than throwing it away, save it in a bag in the freezer, since simmering it in broth releases a deep, savory flavor that plain broth alone cannot match. Many grocery stores also sell parmesan rinds separately near the specialty cheese section if you do not have any saved up.

Can I make this soup vegetarian?

Yes, swap the shredded chicken for a can of drained white beans or chickpeas and use vegetable broth instead of chicken broth. The parmesan rind can stay in the recipe if you eat dairy, since it is the main source of that deep, savory flavor this Italian penicillin soup is known for.

Why is it called Italian penicillin soup?

The nickname comes from the long standing belief that a steaming bowl of garlicky chicken soup can help ease cold symptoms, similar to how chicken soup in general has earned the nickname “Jewish penicillin” in other traditions. This version leans especially hard into garlic and a parmesan rich broth, which is part of why it picked up its own playful Italian take on that same idea, even though no soup can technically replace actual medicine.

Conclusion

Italian Penicillin Soup earns its nickname through sheer garlic power and a broth deepened by a simmered parmesan rind, turning a handful of simple ingredients into something that feels genuinely restorative. What keeps this one on repeat in my kitchen is how reliably good it tastes, cold season or not, thanks to that deep, savory base most chicken soups never quite reach. Make a pot the next time someone in your house needs a little extra comfort, and you will understand exactly why this garlicky bowl has earned its reputation.

For more comforting soup recipes like this one, follow along on Pinterest at MyRecipesDiary.