Why Does My Peanut Butter Taste Funny
Can peanut butter go bad? How do you know if it's no good? We'll tell you how to identify funky PB.
You reach into the pantry and find a jar of peanut butter that's been sitting there for, well, who knows how long. After taking a peek at the best-by date (you're in the clear!), you open the jar and stare into an ocean of oil. The peanut oil has separated from the solids during its long sit, which makes you wonder if it's safe to eat.
Actually, it makes you question whether peanut butter is one of those foods you never knew had an expiration date!
Can peanut butter go bad?
Yes, it can go bad. But separated oil isn't a sign of expired peanut butter. Natural peanut butter doesn't contain additives, stabilizers or hydrogenated vegetable oils, all of which keep the peanut solids and oils together. The oil on top is actually a sign that you bought a high-quality peanut butter!
(Psst: There's a genius tip to prevent this kind of separation, and it kind of changed my life.)
It's hard for peanut butter to spoil because it's mostly fat—that's what makes it taste so good. Natural peanut butter only contains peanuts and sometimes salt, and while some nut butters also contain oil, sugar or stabilizers, there's nothing there to add any water. This gives peanut butter its extremely low moisture content.
Since the majority of spoilage comes from microorganisms that grow in water, unopened peanut butter can happily sit on your shelf without going bad for a long, long time.
How do you know if peanut butter is bad?
You won't find mold growing on it, but its high fat content means it can go rancid. (That's the same reason we don't recommend buying cooking oil in bulk.) Oxygen is the enemy here, and exposure to air can cause your peanut butter to develop off flavors. Rancid foods won't kill you, but they also don't taste great, either.
A sure sign of rancid peanut butter is a change in texture—perhaps it used to be soft and creamy, and now it's dry and hard. It may also look darker in color or it might smell funky (sharp, bitter, soapy or metallic odors are a giveaway).
How should you store peanut butter?
To keep your peanut butter safe and fresh, it's best to store it in the refrigerator. This is a requirement for natural or homemade peanut butter since these varieties lack preservatives. Once opened, it should last five to eight months past the best-by date.
If your peanut butter has been in the fridge for a while, it might be time to create an excuse to eat more peanut butter!
Have extra PB in the pantry? Find a recipe for dessert
Peanut Butter Cream Pie
During the warm months, it's nice to have this fluffy, no-bake peanut butter pie that's a snap to make. Packed with flavor, this pie gets gobbled up even after a big meal! —Jesse & Anne Foust, Bluefield, West Virginia
Giant Peanut Butter Ice Cream Sandwich
I created this giant peanut butter cookie cake for my husband, adding light and low-fat products to the cookie dough. It was so fantastic that I fixed it with conventional ingredients for guests. Since it can be made ahead of time and frozen, it cuts stress for busy hostesses. And really, who doesn't love peanut butter ice cream? —Joann Belack, Bradenton, Florida
Peanut Bars
With peanut butter in both the batter and frosting, plus chopped nuts sprinkled on top, these treats have triple the goodness. It's one of my favorite recipes for peanut bars. —Ren Reed, Tavares, Florida
Layered Chocolate Marshmallow Peanut Butter Brownies
A friend gave me the recipe for these layered brownies, but I added my own touch--chunky peanut butter. Every time I take these to a group gathering, I get requests for the recipe. It's a real crowd-pleaser! —Judy Sims, Weatherford, Texas
Peanut Butter Cup Cheesecake
I said I'd take dessert to a holiday party so I tried this recipe. I'm sure you'll agree it tastes as luscious as it looks! —Dawn Lowenstein, Huntingdon Valley, Pennsylvania
Homemade Peanut Butter Cups
I like using pretty mini muffin liners and topping these homemade peanut butter cups with colored sprinkles to coordinate with the holiday we're celebrating. People can't believe how simple it is to make this irresistible candy with gooey peanut butter centers. This is how to make homemade peanut butter cups. —LaVonne Hegland, St. Michael, Minnesota
Peanut Butter Brownie Trifle
This rich, tempting, peanut butter brownie trifle feeds a crowd and features the ever-popular combination of chocolate and peanut butter. Try this dessert for your next get-together. —Nancy Foust, Stoneboro, Pennsylvania
Chippy Peanut Butter Cookies
"Hey, these are good!" is the surprised remark I hear when I bake these for the family. As simple as it may seem, all I do is follow directions. This works exceptionally well when it comes to making cookies. —Ian Badeer, Hickman, Nebraska
Peanut Butter Pudding Dessert
Here's a fun layered dessert that will appeal to all ages. If you want it even nuttier, you can use chunky peanut butter, and if you're not a fan of cashews, substitute your favorite nut. This peanut butter lasagna is one of my favorite pudding desserts. —Barbara Schindler, Napoleon, Ohio
Peanut Butter Custard Blast
"Ooey, gooey, great!" is how friends and family describe this chocolate-peanut butter dessert. I appreciate the make-ahead convenience. —Marilee Evenson, Wisconsin Rapids, Wisconsin
Low-Fat Peanut Butter Cookies
When you bite into one of these yummy cookies, you'll never guess it's low in fat. This is my family's favorite healthy peanut butter cookie recipe. —Maria Regakis, Saugus, Massachusetts
Peanut Butter Chocolate Poke Cake
When my family is planning a get-together, I can count on three or four people asking if I'm bringing this chocolate peanut butter poke cake. If you don't have a chocolate cake mix, use a white or yellow one and stir in 3 tablespoons of baking cocoa. —Fay Moreland, Wichita Falls, Texas
Peanut Butter Pie Cookies
I love the combination of chocolate and peanut butter, but my favorite—peanut butter pie—is tough to eat on the go. I dreamed up these cookies to get my favorite flavor combo in a bite-size package. They can be made ahead and taken to any holiday gathering. —Ashley Moyna, Elkader, Iowa
Easy Peanut Butter & Pretzel Pie
My crispy, salty pretzel crust just begs for a creamy no-bake peanut butter filling and a layer of chocolate ganache. — Gina Nistico, Taste of Home Food Editor
Old-Fashioned Peanut Butter Pie
My mother made a chewy, gooey peanut butter pie I loved as a child. Now I continue the tradition for the next generation of peanut butter lovers. —Brianna DeBlake, Fremont, Michigan
Peanut Butter Popcorn Balls
Friends and family are always happy to receive these tasty peanut butter popcorn balls. I love making them as well as eating them! —Betty Claycomb, Alverton, Pennsylvania
Maple Peanut Butter Pie
Maple nut goodies have been a favorite candy of mine since I was a child, and I think the flavors taste just as great in a pie! This pie freezes well, too—just take it out to thaw 30 minutes before serving. —Crystal Schlueter, Northglenn, Colorado
Chocolate Peanut Cookies
When I want chocolate chip cookies, I bake this variation, which is full of other goodies, such as candy and peanuts. The cookies are crisp on the outside and moist and tender in the middle. —Clara Coulson Minney, Washington Court House, Ohio
Peanut Butter Cookie Cups
I'm a busy schoolteacher and pastor's wife and I wouldn't dare show my face at a church dinner or bake sale without some of these tempting peanut butter treats. They're quick and easy to make and always a hit. —Kristi Tackett, Banner, Kentucky
Crunchy Candy Clusters
These cereal and marshmallow clusters are so simple that I make them for the holidays each year, as my family looks forward to them. —Faye O'Bryan, Owensboro, Kentucky
Old-Fashioned Peanut Butter Cookies
My mother insisted that my grandmother write down one recipe for her when Mom got married in 1942: the how to make peanut butter cookies from scratch recipe. That was a real effort because Grandma was a traditional pioneer-type cook who used a little of this or that until it felt right. This treasured recipe is the only one she ever wrote down! —Janet Hall, Clinton, Wisconsin
Peanut Butter Brownie Bites
I used to make these brownie bites with a cherry in the center. Then I discovered that my granddaughter Lily is big on peanut butter, so I switched it up. Now she loves to help me make them. —Donna McGinnis, Taylor Ridge, Illinois
Chocolate Peanut Butter Crunch Bars
My twist on rice crispy bars includes crunchy crushed pretzels. Then I top them with a creamy peanut butter coating and rich chocolate topping. Garnished with peanuts and even more pretzels, I don't think I'd ever go back to plain old bars again. —Sherri Melotik, Oak Creek, Wisconsin
Chewy Peanut Butter Pan Squares
With seven of us in our family, including two teenage boys, these peanut butter squares never last long! It's hard to believe how simple they are to prepare. —Deb DeChant, Milan, Ohio
Oatmeal Chocolate Chip Peanut Butter Bars
My family loves this peanut butter cookie bars recipe—oatmeal, brownie bars, peanuts—it's made from all our favorite things! Oatmeal, peanut butter and chocolate chips make these bars a big hit with kids of all ages. Since I always have these basic ingredients on hand, I can whip up a batch anytime. —Patricia Staudt, Marble Rock, Iowa
Peanut Butter Chippers
The smell of peanut butter and chocolate always brings my cookie-hungry family running to the kitchen. The recipe is so quick and easy, I often stir up a batch while making dinner. —Pat Doerflinger, Centerview, Missouri
Gluten-Free Peanut Butter Kiss Cookies
Guests will stand in line to kiss the cook when these treats are served! For a change of pace, try them with chunky peanut butter, too. —Canada60, Tasteofhome.com Community
Chocolate Chip Peanut Butter Cookies
Here's a different version of a traditional recipe. I love these soft peanut butter chocolate chip cookies. — Clarice Schweitzer, Sun City, Arizona
Up Next: The Best Peanut Butter Cups You Can Buy, According to Candy Fanatics
Source: https://www.tasteofhome.com/article/can-peanut-butter-go-bad/
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