cass asked in Food & DrinkCooking & Recipes · 1 decade ago

Can oatmeal go bad?

I just opened a sealed package of Quaker Oats that I've had for awhile. It cooked up fine, but when I tasted it, it tasted sour. I know that they warn that pancake mix can go bad with some type of mold spores. Does anyone know if something similar applies to oatmeal?

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  • 1 decade ago
    Favorite Answer

    Hi !!!

    Here is are two lists that you might find informative...

    Food Storage Shelf Life

    Food Items

    Recommended Shelf Life

    Wheat indefinitely

    Evaporated/condensed milk 12 months

    Non-fat dry milk 12 months

    Dried eggs 12 months

    Dried vegetables 6-12 months

    Dried Meat 6 months

    Dried Fruit 6-24 months

    Cereal (cheerios, etc.) 6-18 months

    Baking powder 6-12 months

    Cornstarch 2-3 years

    Cornmeal 12 months

    Baking Chocolate 6-12 months

    Tapioca 12 months

    Yeast (Dry) 12-18 months

    Baking Soda 8-12 months

    Sodas indefinitely

    Canned Fruit 2-3 years

    Canned Vegetables 12 months

    Canned acidic vegetables 12-18 months

    Soups 12 months

    Canned Meat 12 months

    Canned Fruit Juices 18-24 months

    ***********One Minute Oatmeal 12 months***********

    Bleached Flour 12 months

    Noodles 9 months

    Gelatin 18 months

    Honey up to 2 years

    Jam/jelly/preserves up to 18 months

    Syrup/molasses 12 months

    Mayo 6 months

    Nuts (vacuum packed) 12 months

    Peanut butter 6-9 months

    Dry beans & peas 2 years

    Pudding mix 12 months

    Salad dressing 9-12 months

    Gravy mixes 6-12 months

    Vinegar at least 2 years

    Sugar (granulated) indefinitely

    Sugar (brown) 6 months

    Sugar (powdered) 12-18 months

    Rice (white) 2 + years

    --------AND...

    Before opening, shelf-stable foods should be safe unless the can or packaging has been damaged. After opening, store products in tightly closed containers. The storage of many shelf-stable items at room temperature is a quality issue -- unless the product is contaminated (bugs in flour, for example). Some foods must be refrigerated after opening, such as tuna or chili.

    Shelf-stable

    foods Unopened

    on shelf Opened,

    refrigerated Opened

    on shelf

    Baby food, jars or cans

    Fruits & vegetables 2 months

    after date 2-3 days

    Meats & eggs 2 months

    after date 1 day

    Cereal, dry mixes Use-by date 2 months

    Formula Use-by date 1-2 days

    Bacon Bits,

    imitation 4 months 4 months

    Baking ingredients

    Baking powder 6 months 3 months

    Baking soda 18 months 6 months

    Biscuit or

    pancake mix 15 months Pkg. use-by date

    Cake, brownie

    and bread mixes 12-18 months Pkg. use-by date

    Cornmeal, regular degerminated 6-12 months 12 months

    stone ground or blue 1 month 2-3 months

    Cornstarch 18 months 18 months

    Flour, white 6-12 months 6-8 months

    Flour, whole wheat 1 month 6-8 months

    Frosting, canned 10 months 1 week

    Frosting mixes 12 months 3 months

    Beans, dried 12 months 12 months

    Canned goods,

    low acid 2-5 years 3-4 days

    (such as meat, poultry, fish, gravy, stew, soups, beans, carrots, corn, pasta, peas, potatoes, spinach)

    Canned goods,

    high acid 12-18 months 5-7 days

    (such as juices, fruit, pickles, sauerbraut, tomato, soup, and foods in vinegar-based sauce)

    Cereal, ready-to-eat 6-12 months 3 months

    **cook before eating (oatmeal, etc.) 12 months 6-12 months **

    Chocolate, unsweetened

    and semi-sweet, solid 18-24 months 1 year

    Chocolate syrup 2 years 6 months

    Cocoa and

    cocoa mixes indefinitely 1 year

    Coffee

    Whole beans, non-vacuum bag 1-3 weeks 3-4 months

    frozen

    Ground, in cans 2 years 2 weeks

    Instant, jars and tins 12 months 2-3 months

    Condiments

    Barbecue sauce, bottled 12 months 4 months 1 month

    Catsup, tomato; cocktail sauce or chili sauce 12 months 6 months 1 month

    Chutney 12 months 1-2 months

    Horseradish, in jar 12 months 3-4 months

    Mayonnaise, commercial 2-3 months 2 months

    Mustard 12 months 1 year 1-2 months

    Olives, black

    and green 12 -18 months 2 weeks

    Pickles 12 months 1-2 months

    Salad dressings, commercial, bottled 10-12 months 3 months

    Salsa, picante and taco sauces 12 months 1 month

    Cookies, packaged 2 months 8-12 months frozen 4 weeks

    Crackers 8 months freeze or refrig.

    3-4 months 1 month

    Diet powder mixes 6 months 3 months

    Extracts, vanilla,

    lemon, etc. 3 years 1 year

    Fruits, dried 6 months 6 months

    Garlic, chopped, commercial jars 18 months Refrigerate; use

    by date on jar

    Gelatin, flavored 18 months Use all or reseal for 3-4 months

    Gelatin, unflavored 3 years Use all or reseal for 3-4 months

    Gravy, jars & cans 2-5 years 1-2 days

    dry gravy mixes 2 years Mix entire packet

    Herbs, dried 1-2 years Store in cool dark place 1 year.

    Honey 12 months 12 months

    Jams, jellies, preserves 12 months 6 months

    Juice, boxes 4-6 months 8-12 days

    Lentils, dried 12 months 12 months

    Maple syrup,

    pure genuine 12 months 12 months

    Marshmallows, marshmallow creme 2-4 months 1 month

    Milk, canned evaporated 12 months 4-5 days

    Molasses 12 months 6 months

    Mushrooms, dried 6 months 3 months

    Oils, olive or vegetable 6 months 4-6 months

    walnut, macadamia, other nut oils 6 months 4 months

    vegetable oil sprays 2 years 1 year

    Nuts, jars or cans 12 months 4-6 months,

    Freeze 9-12 months

    Pasta, dry, made without eggs 2 years 1 year

    dry egg noodles 2 years 1-2 months

    Peanut butter, commercial 6-9 months 2-3 months

    Peas, dried split 12 months 12 months

    Pectin Use by package date 1 mo.

    Popcorn, dry kernels in jar 2 years 1 year

    commercially popped in bags 2-3 months 1-2 weeks

    Microwave packets 12 months 1-2 days popped

    Potato chips 2 months 1-2 weeks

    Potatoes, instant 6-12 months 6-12 months

    Pudding mixes 12 months 3-4 months

    Rice, white or wild 2 years 1 year

    brown 1 year 6 months

    flavored or herb mixes 6 months Use entire amt.

    Sauce mixes, non dairy (spaghetti, taco, etc.) 2 years Use entire amt.

    cream sauces with milk solids 1 year

    Shortening, solid 8 months 3 months

    Soda such as carbonated cola drinks, mixers:

    Diet sodas,

    bottles or cans 3 months

    after date 2-3 days

    Regular sodas, bottles 3 months

    after date 2-3 days

    Regular sodas,

    cans 9 months

    after date n.a.

    Soup mixes 12 months Use entire amt.

    Spices, whole 2-4 years Included in total

    ground 2-3 years Included in total

    Paprika, red pepper, chili powder 2 years Store in refrig.

    Sugar, brown 4 months Sugar nevers spoils

    Granulated 2 years

    Confectioners 18 months

    Sugar substitutes 2 years

    Syrup, pancake, maple & other flavors 12 months 12 months

    Tapioca 12 months 12 months

    Tea, bags 18 months 12 months

    Loose 2 years 6-12 months

    Instant 3 years 6-12 months

    Toaster pastries, fruit filled 6 months Keep foil packets sealed

    non-fruit fillings 9 months

    Tomatoes, sun dried, packed in oil 12 months 6-12 months

    packed in cellophane 9 months 3-6 months

    Vinegar 2 years 12 months

    Yeast, dry,

    packets and jars Use-by date Refrigerate

    open jars

    Water, bottled 1-2 years 3 months

    Worcestershire sauce 1 year 1 year

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  • Anonymous
    1 decade ago

    Ok. You cooked the product. Did you smell anything different? Probably not. Ate a few bites and it was sour. Oats dont go bad because it is just oats- a grain just like macaroni or spaghetti. It comes down to temperature variation. Grains have to be stored in a cool and dry place. Any chance of it coming in contact with any off elements and you run the danger of having bad oatmeal.

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  • 4 years ago

    yes, opened a box of oatmeal I bought 13 months ago and cooked some and sugared it and was amazed at the sour taste-was blaming the brown sugar until I checked

    Google- Am pleased I didn't throw out the sugar!

    5/8/16

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  • Anonymous
    1 decade ago

    Yes, it can go bad. Not likely to make you sick, but doesn't taste very good. This is likely due to the fat that is present oxidizing.

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  • 1 decade ago

    It doesn't go bad in a dry container, but it can become stale.

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  • 1 decade ago

    It certainly can, before it is even packaged for sale. Has to be dried properly and sometimes a bad bit sneaks through.

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  • 1 decade ago

    Oatmeal can produce small worms and mold as well as rice. throw it out.

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  • 1 decade ago

    It can go stael just like cereal if you don't have it in an air tight container.

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  • 1 decade ago

    Yes. Even if it is sealed , it does have a life span of about a year.

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  • 1 decade ago

    Absolutely it can go bad. Weevils can emerge and give it a bitter taste.

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  • 1 decade ago

    It can get mold spores if it gets wet. It also can breed meal-y worms in it.

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