This bowl of Italian Penicillin Soup has been my go-to when colds hit, when the house needs warming, or when someone at the table needs gentle comfort. I first learned a basic version of this while caring for my grandmother after a winter flu; she insisted on a pot that smelled of garlic, lemon, and bright herbs. Over time I tuned the balance—enough olive oil for silkiness, bay leaves for depth, and a burst of fresh lemon and parsley at the end to lift everything. The result is bright, nourishing, and oddly restorative: warm broth, tender chicken, little pasta pearls that hold the broth, and aromatics that soothe both stomach and spirit.

I cook this whenever I want food that feels like a hug. The texture is important: soft cooked vegetables, strands of shredded chicken, and al dente small pasta each play their part. The lemon juice at the end is the trick that turns an ordinary soup into something that snaps awake on the palate, and the fresh parsley finishes it with a green freshness that makes every spoonful sing. Family members who usually skip soup come back for seconds, and guests often ask for the recipe—so here it is, in full detail from pantry basics to plating tips.

Ingredients

• Extra virgin olive oil: 2 tablespoons—choose a fruity, medium-intensity EVOO; a quality Spanish or Italian bottle like Colavita or Corto gives the broth a rounded mouthfeel without dominating the aromatics.
• Onion: 1 large, diced (about 1 cup)—yellow onion provides sweetness and body; cook until translucent to coax out natural sugars.
• Carrots: 3 medium, sliced into rounds—to add gentle sweetness and color; choose firm, bright carrots.
• Celery: 3 stalks, chopped—classic soffritto element for savory base and aromatic depth.
• Garlic: 4 cloves, minced—adds warmth and traditional Italian flavor; don’t burn it—add after the onions soften.
• Chicken broth: 8 cups low-sodium—use good-quality store-bought broth or homemade for the best flavor; vegetable broth works well for the vegetarian option.
• Chicken breast: 1 whole bone-in, skin-on (about 1 pound)—the bone and skin give the stock body; you can use boneless if preferred, but simmer time changes slightly.
• Bay leaves: 2—simple aromatics that lend subtle herbal complexity.
• Small pasta: 1 cup (ditalini, orzo, or small shells)—provides texture and soaks up the broth; measure dry.
• Oregano: 1 teaspoon dried—Italian oregano or a high-quality mixed oregano brings classic herb tones.
• Thyme: 1/2 teaspoon dried—adds gentle earthiness; fresh can be used (1 1/2 teaspoons) for brighter notes.
• Red pepper flakes: 1/4 teaspoon (optional)—a whisper of heat to make the broth more restorative.
• Salt & black pepper: To taste—season progressively, especially after reducing the broth with pasta.
• Fresh lemon juice: 2 tablespoons—brightens and balances richness; add at the end to preserve brightness.
• Fresh parsley: 1/4 cup chopped—finish with a generous sprinkling to add color and freshness.

Instructions

Prepare the vegetables and aromatics: Heat a large heavy-bottomed pot over medium heat. Add 2 tablespoons extra virgin olive oil, then the diced onion, carrots, and celery. Sweat the vegetables for 6–8 minutes until the onion is translucent and the carrots begin to soften. Add the minced garlic and cook 30–45 seconds until fragrant—avoid browning to prevent bitterness. This gentle sweating builds the flavor base through caramelization without crisping. Add broth and chicken: Pour in 8 cups low-sodium chicken broth and bring to a gentle simmer. Add the whole bone-in, skin-on chicken breast and 2 bay leaves. Sprinkle in the dried oregano, thyme, and red pepper flakes if using. Reduce heat to low, cover, and simmer for 20–25 minutes until the chicken reaches an internal temperature of 165°F (74°C) and the broth is fragrant. Periodically skim any foam that rises to keep the broth clear and clean. Remove and shred the chicken: Transfer the chicken to a cutting board. Use two forks to shred the meat, discarding the skin and bones. Taste the broth and adjust seasoning—add salt and fresh black pepper as needed. Remove bay leaves. Shredding the chicken separately allows you to control texture and ensures the meat remains tender. Cook the pasta and finish: Bring the broth back to a gentle boil and add 1 cup small pasta. Cook until al dente per package directions (usually 8–10 minutes). Reduce heat, return the shredded chicken to the pot, and stir gently. Finish with 2 tablespoons fresh lemon juice and 1/4 cup chopped parsley. Let the soup rest off heat for 2 minutes so flavors meld. Serve hot with an extra drizzle of olive oil if desired.

Storage Tips

Cool the soup quickly and refrigerate within two hours in covered containers for up to 4 days. For longer storage, freeze in airtight containers—leave out the pasta and add freshly-cooked pasta when reheating. Reheat gently on the stovetop over low heat to avoid over-reducing the broth; add a splash of water or broth if it becomes too concentrated. A microwave works for single bowls—use short intervals and stir in between to heat evenly.

Ingredient Substitutions

For a vegetarian version replace the chicken and broth with 2 cans of drained chickpeas (or 1 1/2 cups cooked) and 8 cups vegetable broth; add a tablespoon of white miso or a splash of soy sauce for umami. To make it gluten-free, use a rice or lentil pasta or small gluten-free pasta shapes and watch cooking times. If you want richer mouthfeel, finish with a tablespoon of butter or a swirl of extra virgin olive oil; for lower fat, omit the skin and reduce oil to 1 tablespoon.

Serving Suggestions

Serve in deep bowls with a scattering of fresh parsley and an optional lemon wedge. This pairs well with crusty bread or a simple green salad dressed in vinaigrette. For a heartier meal, add sautéed spinach or kale right before serving, or top each bowl with grated Parmesan if you’re not avoiding dairy. Offer red pepper flakes at the table for guests who like a spicier bite.

Cultural Background

This soup blends the Italian tradition of brothy, herb-forward soups—think brodo and minestrone—with a restorative, almost medicinal role in family kitchens. In Italy, similar broths are given to the ill or new mothers; the emphasis is on clear but flavorful stock, tender meat, and bright herbs. The term “penicillin” here is affectionate: food as comfort and mild remedy rather than literal medicine.

Seasonal Adaptations

In winter, add root vegetables like parsnip or a diced potato for extra body. Spring calls for swapping parsley for fresh basil and adding peas. Summer benefits from lighter broth and more lemon; autumn encourages heartier greens like cavolo nero or finely chopped savoy cabbage. Adjust herb quantities and aromatics seasonally to keep the bowl feeling rooted in the moment.

Meal Prep Tips

Make the broth and cook the chicken a day ahead; store separately in the refrigerator. Reheat, shred the chicken, add pasta and finish with lemon and parsley when ready to serve. Portion into single-serving containers for quick lunches, and keep the lemon and parsley in small separate containers to add fresh before eating. This approach saves about 20 minutes on active day-of cooking.

This soup is serving-size flexible, forgiving in technique, and full of small, intentional choices that add up to a bowl people remember. It’s a humble yet proud staple in my weeknight rotation—bearer of warmth, health, and simple deliciousness.