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Does Powdered Peanut Butter Go Bad

Does Powdered Peanut Butter Go Bad?

Powdered peanut butter has become an increasingly popular alternative to traditional peanut butter over the past few years. Brands like PB2 allow peanut butter lovers to enjoy the flavor and protein of peanuts in a more convenient, low-fat form. But does powdered peanut butter go bad?

In this article, we’ll cover everything you need to know about the shelf life and proper storage of powdered peanut butter. We’ll also provide tips for identifying when your powdered peanut butter has gone bad and discuss how it compares with traditional peanut butter.

An Introduction to Powdered Peanut Butter

Before diving into powdered peanut butter’s shelf life, let’s first discuss exactly what it is and how it’s made.

Powdered peanut butter, often referred to by the brand name PB2, is made by pressing most of the natural oils and fats out of roasted peanuts. The remaining peanut solids are then ground into an ultra-fine powder.

This powdered form contains around 85% less fat than traditional peanut butter, though it still packs in peanut flavor and protein. Powdered peanut butter is also lower in calories per serving compared to regular peanut butter.

To use powdered peanut butter, you simply mix it with water to rehydrate it into a peanut butter-like paste. It can then be used just like regular peanut butter on sandwiches, in oatmeal, smoothies, baked goods, and more. The fact that it doesn’t require refrigeration and is easier to store makes it handy for travel and outdoor adventures.

Now let’s take a closer look at the shelf life and proper storage conditions for maximizing the freshness of powdered peanut butter.

How Long Does Powdered Peanut Butter Last?

Powdered peanut butter like PB2 has a relatively long shelf life compared to traditional peanut butter. However, its quality and freshness will degrade over time, especially if not stored properly. Here is an overview of the shelf life you can expect:

  • Unopened: PB2 has a shelf life of up to 2 years when left sealed in its original packaging. The expiration date printed on the packaging indicates the manufacturer’s recommended timeframe for enjoying PB2 at peak quality.
  • After Opening: Once opened, the shelf life is reduced to just 6-9 months. Exposure to oxygen starts a countdown to potential staleness and degradation in quality.

The shelf life can vary depending on how the product is stored after opening. Proper storage is key for maximizing freshness, as we’ll discuss next.

How to Store Powdered Peanut Butter Correctly

To retain peak quality and fresh peanut flavor for as long as possible, be sure to store powdered peanut butter properly:

  • Keep it Cool & Dry: Store opened PB2 in a cool, dry place away from heat and moisture. The ideal temperature is around 65°F. High heat and humidity will quicken degradation.
  • Refrigerate, But Not Required: While refrigeration can help extend shelf life after opening, it’s not required. If you choose to refrigerate, use an airtight container to prevent absorption of fridge odors.
  • Consider Freezing: For long term storage, you can freeze powdered peanut butter to prolong freshness. Use moisture-proof packaging like a plastic freezer bag or airtight container.

With proper storage methods, you can enjoy powdered peanut butter for many months past its printed expiration date. But eventually it will go bad. Here’s how to tell if your PB2 has spoiled…

Signs That Your Powdered Peanut Butter Has Gone Bad

Powdered peanut butter has a pretty long shelf life compared to many pantry staples. But it will eventually go rancid if kept past its prime. Here are the main signs of spoiled powdered peanut butter:

  • Rancid Smell: The most obvious indicator is a rancid, unpleasant odor. Fresh PB2 has an aromatic, peanutty aroma.
  • Change in Appearance: Look for changes in color, clumping, dryness, or signs of mold growth, which signal deterioration.
  • “Off” Taste: Tasting a small amount can confirm rancidity. But use caution and immediately spit out any PB2 with an unpleasant or bitter flavor.

If you notice any of these changes, it’s safest to throw away the powdered peanut butter to avoid any illness or allergic reaction. For a long shelf life, proper storage really is key.

Tips for Using Powdered Peanut Butter

Before we compare its shelf life to regular peanut butter, let’s quickly go over some ways to use powdered peanut butter:

  • Rehydrate: Mix 2 tablespoons PB2 with 1-2 tablespoons water. Adjust consistency as needed. Let sit 5 minutes to fully rehydrate.
  • Add to Smoothies: Blend PB2 into smoothies for extra protein and flavor. Works great with banana, chocolate, peanut butter, etc.
  • Stir into Oatmeal: Mix in PB2 to overnight oats, hot oatmeal, or baked oatmeal for a protein boost.
  • Use in Baking: Add PB2 to cookies, granola bars, pancakes, and other baked goods.
  • Spread on Sandwiches: After rehydrating, use PB2 as you would regular peanut butter on sandwiches.
  • Make a Sauce: Whisk together PB2, soy sauce, sesame oil, ginger, and chili paste for an Asian peanut dipping sauce.

The options are endless for infusing recipes with powdered peanut butter flavor!

How Powdered Peanut Butter Compares to Regular Peanut Butter and Other Alternatives

Now let’s discuss how the shelf life and characteristics of powdered peanut butter compare with traditional peanut butter and other powdered peanut butter alternatives:

  • Shelf Life: Traditional peanut butter lasts 3-4 months refrigerated compared to 6-9 months for powdered. Some other powdered brands like PB Fit also have approximately a 6-9 month shelf life.
  • Nutrition: Powdered has around 85% less fat and fewer calories than traditional peanut butter. But it has a similar protein content.
  • Taste: The taste of PB2 is likened to roasted peanuts. The texture is smoother than other powdered peanut butters, but grainier than regular.
  • Cost: Powdered options are generally more expensive per ounce than traditional peanut butter. But their convenience makes them worthwhile for many.
  • Use: Powdered peanut butter requires rehydrating before use. Traditional peanut butter can be used immediately and retains its consistency better when baking.

So in summary, powdered peanut butter has some advantages when it comes to shelf life and nutrition. But traditional peanut butter offers richer flavor and a creamier texture for things like sandwiches. Ultimately it comes down to personal preference and intended use!


Powdered peanut butter like PB2 offers a tasty lower-fat, lower-calorie option that storable and shelf-stable. Its shelf life reaches up to 2 years sealed and 6-9 months after opening. Proper refrigerated storage can further prolong its freshness.

Check packaging expiration dates and be on the lookout for signs of spoilage like rancid odors, color changes, and unpleasant flavors. To enjoy the benefits of powdered peanut butter, be diligent about proper storage!

With a few added steps like rehydrating before use, powdered peanut butter makes a handy plant-based protein source with countless culinary applications. Try blending it into smoothies, baking with it, or simply spreading it on sandwiches for a flavor boost.

So go ahead and stock up on those jars of powdered peanut butter. With proper storage methods, you can enjoy every last spoonful over many months. Just be diligent about watching for any signs of spoilage to ensure safety and quality.

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