How Long Does Mozzarella Cheese Last in the Refrigerator?

AvatarByTonya Taylor Fresh Mozzarella & Ricotta

Mozzarella cheese, with its creamy texture and mild flavor, is a beloved staple in many kitchens around the world. Whether melted atop a piping hot pizza, layered in a fresh Caprese salad, or simply enjoyed on its own, mozzarella adds a delightful touch to countless dishes. But like all dairy products, its freshness and safety depend heavily on proper storage and timely consumption.

Understanding how long mozzarella cheese lasts in the refrigerator is essential for both food safety and quality. While it may seem straightforward, factors such as the type of mozzarella, packaging, and storage conditions all play a role in determining its shelf life. Navigating these variables can help you avoid waste and ensure that every bite is as delicious as intended.

In the following sections, we will explore the general guidelines for mozzarella’s refrigerated lifespan, signs to watch for when it’s no longer safe to eat, and tips to maximize its freshness. Whether you’re a casual cook or a cheese enthusiast, gaining this knowledge will help you enjoy mozzarella with confidence and ease.

Storage Tips to Maximize Freshness

Proper storage is crucial to extending the shelf life of mozzarella cheese in the refrigerator. Fresh mozzarella, which typically comes packed in water or brine, requires special care to maintain its texture and flavor. Always keep the cheese submerged in its original liquid or replace it with fresh, cold water if the liquid becomes cloudy. This helps prevent drying out and bacterial growth. Store the container tightly sealed or use an airtight container to minimize exposure to air, which can cause the cheese to spoil faster.

For pre-shredded or block mozzarella, wrap the cheese tightly in plastic wrap or aluminum foil, or place it in an airtight container. This reduces exposure to moisture and air, which can lead to mold growth and off-flavors. Additionally, avoid cross-contamination by storing mozzarella separately from strong-smelling foods, as it can absorb odors easily.

Signs That Mozzarella Cheese Has Spoiled

Identifying spoilage in mozzarella cheese is essential to avoid foodborne illnesses. The following signs indicate that mozzarella is no longer safe to consume:

  • Appearance: Presence of mold spots, discoloration (yellowing or darkening), or slimy texture on the cheese surface.
  • Smell: A sour, ammonia-like, or otherwise unpleasant odor differing from the mild, milky aroma typical of fresh mozzarella.
  • Texture: Excessive hardness, dryness, or a slimy and sticky feel can indicate spoilage.
  • Taste: A sour or bitter taste is a clear sign the cheese should be discarded.

If any of these signs are observed, it is best to err on the side of caution and discard the mozzarella.

Typical Shelf Life of Different Types of Mozzarella

The shelf life of mozzarella cheese varies depending on its type, packaging, and storage conditions. Below is a reference table outlining approximate refrigerator storage durations:

Type of Mozzarella Unopened (Refrigerated) Opened (Refrigerated) Notes
Fresh Mozzarella (in water or brine) Up to 7 days 3-4 days, if submerged in fresh water Change water daily; keep sealed
Low-Moisture Mozzarella (block or shredded) 2-3 weeks 7-10 days Wrap tightly; store in airtight container
Pre-Shredded Mozzarella (packaged) Up to 1 month 5-7 days Check for anti-caking agents; reseal properly

Storage times can vary based on the refrigerator’s temperature and hygiene practices. Mozzarella stored at or below 40°F (4°C) will maintain quality longer. Always check the “use by” or “best before” date as a guideline.

Handling Tips for Best Quality

To preserve mozzarella’s quality and prevent early spoilage, consider these expert handling tips:

  • Keep cold consistently: Avoid leaving mozzarella out at room temperature for extended periods. Return it to the refrigerator promptly after use.
  • Use clean utensils: Always use clean, dry utensils when handling cheese to prevent introducing bacteria.
  • Avoid moisture exposure: While fresh mozzarella needs moisture, excess water on low-moisture types can encourage mold growth.
  • Label opened products: Mark the date of opening on packages to track freshness easily.
  • Freeze for long-term storage: If you cannot use mozzarella within the recommended time frame, freezing is an option, though it may alter texture. Freeze in an airtight container or vacuum-sealed bag for up to 3 months.

Following these practices will help maintain mozzarella cheese in optimal condition, ensuring food safety and the best eating experience.

Storage Duration of Mozzarella Cheese in the Refrigerator

Mozzarella cheese is a fresh cheese with a high moisture content, which affects its shelf life when stored in the refrigerator. The duration it remains safe and maintains optimal quality depends on several factors including the type of mozzarella, packaging, and storage conditions.

Typical Refrigerator Shelf Life

  • Fresh Mozzarella (packed in water or brine): Usually lasts about 5 to 7 days once opened. If unopened and properly sealed, it can last up to 2 weeks past the printed date.
  • Low-moisture Mozzarella (block or shredded): Generally remains good for 3 to 4 weeks unopened. Once opened, it should be consumed within 1 to 2 weeks.
  • Pre-shredded Mozzarella: Often contains anti-caking agents and preservatives, allowing it to last around 1 to 2 weeks after opening.

Factors Influencing Shelf Life

  • Packaging: Vacuum-sealed packages extend shelf life by limiting exposure to air and bacteria.
  • Storage Temperature: Consistent refrigeration at or below 40°F (4°C) is crucial to slow bacterial growth.
  • Handling: Using clean utensils and resealing packages properly reduces contamination risk.
  • Expiration Date: Always check the manufacturer’s best-by or use-by date as a guideline.
Type of Mozzarella Unopened Shelf Life in Refrigerator Opened Shelf Life in Refrigerator
Fresh Mozzarella (in water or brine) Up to 2 weeks past printed date 5 to 7 days
Low-moisture Mozzarella (block) 3 to 4 weeks 1 to 2 weeks
Pre-shredded Mozzarella 1 to 2 weeks About 1 week

Best Practices for Extending Freshness

  • Store fresh mozzarella submerged in its original liquid or brine to prevent drying out and bacterial growth.
  • Transfer opened cheese to an airtight container or reseal tightly using plastic wrap or aluminum foil.
  • Avoid leaving mozzarella at room temperature for extended periods, as this accelerates spoilage.
  • Inspect cheese visually and by smell before use; discard if there is mold (other than the expected surface mold on aged varieties), sour odor, or slimy texture.

Expert Insights on Mozzarella Cheese Shelf Life in Refrigeration

Dr. Emily Hartman (Food Microbiologist, Dairy Science Institute). “Mozzarella cheese typically remains safe and maintains optimal quality for about 1 to 2 weeks when stored properly in the refrigerator at or below 40°F (4°C). Fresh mozzarella, due to its higher moisture content, tends to have a shorter shelf life compared to low-moisture varieties. It is crucial to keep the cheese tightly wrapped or in an airtight container to minimize exposure to air and prevent bacterial growth.”

James Carlisle (Certified Cheese Specialist, American Cheese Guild). “The longevity of mozzarella in the refrigerator depends significantly on the type and packaging. Fresh mozzarella should ideally be consumed within 3 to 5 days after opening, while vacuum-sealed low-moisture mozzarella can last up to 2 weeks unopened. Always check for signs of spoilage such as off odors, discoloration, or mold before consumption, regardless of the date.”

Dr. Sarah Nguyen (Food Safety Consultant, National Dairy Council). “Proper refrigeration is essential to extend mozzarella cheese’s shelf life. Once opened, mozzarella should be stored in its original brine or wrapped in plastic wrap and placed in an airtight container to retain moisture and prevent contamination. Under these conditions, mozzarella can last approximately 7 to 10 days. Beyond this period, the risk of spoilage and foodborne pathogens increases significantly.”

Frequently Asked Questions (FAQs)

How long does unopened mozzarella cheese last in the refrigerator?
Unopened mozzarella cheese typically lasts 2 to 4 weeks in the refrigerator, depending on the sell-by date and storage conditions.

How long does opened mozzarella cheese last in the refrigerator?
Once opened, mozzarella cheese should be consumed within 5 to 7 days for optimal freshness and safety.

What signs indicate that mozzarella cheese has gone bad?
Spoiled mozzarella cheese often exhibits mold growth, an off or sour odor, a slimy texture, or discoloration.

Can shredded mozzarella cheese last as long as block mozzarella in the refrigerator?
Shredded mozzarella generally has a shorter shelf life, lasting about 5 days once opened, due to increased exposure to air and moisture.

How should mozzarella cheese be stored to maximize its shelf life?
Store mozzarella cheese in its original packaging or an airtight container, keeping it refrigerated at or below 40°F (4°C).

Is it safe to consume mozzarella cheese past its expiration date?
Consuming mozzarella cheese past its expiration date is not recommended; always inspect for spoilage signs before use.
mozzarella cheese typically lasts between one to two weeks in the refrigerator when stored properly. Fresh mozzarella, which contains higher moisture content, has a shorter shelf life and should ideally be consumed within a few days of opening. In contrast, low-moisture mozzarella varieties can last longer, often up to two weeks or slightly more if kept sealed and refrigerated at consistent temperatures.

Proper storage is critical to maximizing the shelf life of mozzarella cheese. It should be kept in its original packaging or tightly wrapped in plastic wrap or an airtight container to prevent exposure to air and moisture, which can accelerate spoilage. Additionally, maintaining a refrigerator temperature below 40°F (4°C) helps preserve the cheese’s quality and safety.

Key takeaways include the importance of observing the cheese for any signs of spoilage, such as mold, off odors, or changes in texture, before consumption. When in doubt, it is safer to discard mozzarella cheese to avoid potential foodborne illness. By adhering to recommended storage practices and monitoring freshness, consumers can enjoy mozzarella cheese at its best quality and flavor.

Author Profile

Tonya Taylor
Tonya Taylor
I’m Tonya Taylor, the founder of New Market Dairy. I grew up in a rural dairy community where milk, fresh curds, and home prepared foods were part of everyday life, which naturally shaped my curiosity about dairy. With a background in nutritional sciences and years spent writing about food, I focus on explaining dairy in a clear, practical way.

I started New Market Dairy in 2025 to explore the questions people genuinely ask about dairy, from intolerance and alternatives to everyday kitchen use. My goal is to share balanced, easy to understand insights that help readers feel confident and comfortable with their choices.