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- FAQs
- FAQs on Bacteria
- What are bacteria?
- How can I avoid getting sick from a bacterial illness?
- How dangerous is a staph infection?
- Can I assume that if food smells bad its unsafe to eat and if it smells ok that it is safe to eat?
- How dangerous is botulism?
- How dangerous is listeria?
- How many types of bacteria are there?
- What foods are likely to be contaminated by listeria?
- What foods can give a person a staph infection?
- What foods can give a person botulism?
- Why do some bacteria make people sick?
- Why does refrigeration keep bacteria from multiplying?
- Can I avoid all contact with bacteria if I’m careful?
- How Many Bacteria Does It Take to Cause Illness?
- FAQs on Cookware
- Are Ceramic and Enamel Cookware Safe and Practical?
- Are Nonstick Coatings on Cookware a Health Risk?
- Do Cast Iron, Glass, Copper, and Titanium Cookware Have Any Disadvantages?
- Does Using Aluminum Cookware Increase the Chances of Developing Alzheimer’s Disease?
- Is Stainless Steel Cookware a Good Choice?
- Is the New Silicone Rubberized Cookware Safe?
- Nonstick Cookware: Is it Dangerous?
- What Brands of Cookware are Recommended by Experts?
- What Features Should I Look for When Selecting Cookware?
- What Should I Know about Selecting and Using Aluminum Cookware?
- FAQs about Definitions
- Exactly what is meant by the phrase perishable food?
- Defining Some Current Language about Food
- What Does the Word “Foodie” Mean? It Depends Who(m) You Ask
- What do “sell by,” “best by/before,” “use by” and “expiration” mean?
- What does the term shelf life mean?
- What's in Our Food? Maybe Processing Aids, Maybe not
- “Fresh,” “Natural,” “Processed”—What Do These Words Mean?
- FAQs on Dropped Food
- FAQs on Farmers' Markets
- Exactly what defines a farmers’ market?
- Farmers' Markets: Why They're So Popular; How to Find One Near Your Home
- How should I handle produce at home?
- What foods are sold with restrictions at a farmers’ market?
- What should I bring to the farmers’ market?
- What shouldn’t I do or eat at a farmers’ market?
- What signs indicate a sanitary farmers’ market?
- What time of day is it best to go to a farmers’ market?
- FAQs on Food-borne Illness and Mishandling of Food
- About how many cases of food-borne illness occur in the U.S. each year?
- Answer Key to “How Much Do You Know about Safe Handling of Food?”
- How Much Do You Know about Safe Handling of Food?
- I Left It Out Too Long! Can I Still Eat It?
- Should Your Grocery Card Track Food-Borne Illnesses?
- Sudden, Awful Intestinal Distress--Is it the Flu or a Foodborne Illness--or Both?
- What YOU Can Do to Avoid Food-borne Illness
- What does the phrase food-borne illness refer to?
- FAQs on Food Product Dating
- Are stores required, by law, to remove outdated items from their shelves?
- Do most consumers actually pay attention to the dating on foods?
- Does the “use by” date matter once the product is frozen?
- Is information on food longevity and safety available by phone?
- What are expiration dates?
- What do the terms closed dating and open dating mean?
- What if there is no date on a product, and I don’t remember if I bought it a month ago or ten years ago?
- What should consumers know about food product dating?
- When Did You Buy It? When Did You Open It?
- When to Throw Food Out? Not on the Use-By Date
- Who establishes these product dates?
- Who requires and regulates dating on foods?
- Why do “best by” and “use by” dates sometimes seem conservative?
- FAQs on Food Safety
- "Is It Safe To….?" FAQs Answered by our Advisory Board
- FAQs about Ground Beef, Seasonings, Olive Oil, Lemon Wedges, and Fish
- FAQs about Mushrooms: Are they Very Dirty or Very Clean?
- FAQs about Soft Cheeses--What's Safe, What Isn't
- FAQs on BPA: the attacks continue, but are they justified?
- FAQs on Food Safety and Nutrition
- FAQs on Raw Fruits and Veggies—the Answers Can Protect Your Wallet and Your Health
- FAQs: Cutting Boards and Kitchen Counters--Selection and Care
- Food Bars/Buffets in Supermarkets--Is the food safe? How can you tell?
- Food/Meat Thermometers—What You Need to Know
- How Long Should Cheese Be Aged? Will the Rules Be Changed?
- How Long Will They REALLY Last? Part I: Non-perishables
- How Long Will They REALLY last? Part II: Perishables
- Imported Foods—What’s Safe, What’s Risky?
- Is It Safe? Is It Nutritious? More Survey Answers from Scientists
- Is It Time to Switch to Pasteurized Eggs?
- Is the Food Safety Modernization Act Making Our Food Supply Safer?
- More FAQs about Minimum Safe Cooking Temperatures: Pork and Other Perishables
- Sushi: Why Such a Short Shelf Life?
- Winter Food Storage—Can I leave It in the Car or in the Garage?
- Would You—Should You—Do You--Eat Irradiated Food?
- FAQs on Food Wrapping
- Are any plastic wraps or containers really “microwave safe”?
- Are some plastic wraps more effective than others?
- Can I refrigerate meat and poultry in its store wrapping?
- Can I use plastic freezer bags to store produce in the fridge?
- Can chemicals leach unto food from plastic wrap or containers?
- Do coated plastic bags really help produce last longer?
- Does aluminum foil give foods a metallic taste?
- Does exposure to aluminum cause Alzheimer’s disease?
- Everything You Need to Know about Wrapping Food Right
- How should fruits be wrapped before refrigeration?
- Is it safe to use aluminum foil in a microwave oven?
- Should I wrap raw vegetables loosely or tightly before refrigerating?
- What are some advantages and disadvantages of aluminum foil?
- What produce needs to be wrapped before refrigerating?
- What’s better for wrapping food—plastic or aluminum foil?
- Why does foil sometimes darken, discolor, and leave black specks on food?
- Will a foil cover help keep foods on the table hot or cold?
- FAQs on Freezing Food
- FAQs on Leftovers
- FAQs on Mold
- What is mold?
- Does mold ever grow on nonperishable food?
- Can I remove a moldy part from food and eat the rest?
- About how many different kinds of molds are there?
- How can I avoid getting mold on my refrigerated food?
- Is mold always visible?
- Are any molds harmless?
- What food groups are most susceptible to mold?
- What kinds of illnesses can result from eating moldy food?
- What kind of packaging protects foods from mold?
- What other safety tips will help prevent mold from growing?
- Why are some molds dangerous?
- FAQs on Organic Food
- What Is Organic Food?
- Are Organic Methods More Humane to Animals?
- Does Conventional Food Have a Longer Shelf Life Than Organic?
- Does Organic Food Taste Better than Conventional Food?
- Is Organic Food More Nutritious Than Conventional Food?
- Is Organically Grown Food Better for the Environment?
- What Do the Various Organic Labels Mean?
- What Important Contributions Has the Organic Movement Made?
- Which Are Safer: Organic or Conventional Food Products?
- Will Organic Baby Food Make Baby Healthier?
- FAQs on Oxidation: How It Affects Foods
- FAQs about Plastic Products Used with Food
- Pyrex® Glassware: Is it safe to use?
- Are plastic bags safe to use in the microwave?
- Are some plastic wraps safer and/or more effective than others?
- Are there any health risks from reusing plastic water bottles by refilling them with tap water?
- Are we eating chemicals from plastics along with our food?
- Can I microwave food in my plastic containers?
- Does the plastic used in water bottles pose a health risk?
- If I heat food in an open can, will that cause the plastic lining to leach chemicals into the food?
- Is it safe to heat frozen entrées in their plastic containers and with their plastic wrap?
- Is it safe to use plastic wrap as a covering when microwaving food?
- Is it safe to wash and dry plastic plates, cups, containers, and utensils in the dishwasher?
- Is there good evidence that BPA is harmful to human health?
- Of the plastic products used to store, heat, or eat with (wraps, bags, containers, silverware, plates, etc.), which contain BPA?
- What is BPA?
- Why is so much of today’s food packaged in plastic?
- FAQs on Preservatives
- What are Preservatives?
- All things considered, is our food supply safer or less safe because of preservatives?
- Are the preservatives in hot dogs and similar products health risks?
- What preservatives are known to cause allergic reactions?
- What are some common preservatives used in food?
- What food groups commonly have preservatives in them?
- Why are preservatives added to food?
- Will the label on the product tell me if it contains a preservative?
- FAQs on Washing Produce: Why and How
- Other FAQs
- Can chicken soup really cure a cold?
- Is Chocolate Good For You?
- Can Science and Technology Help You Save Food Dollars?
- FAQs Answered By Our Board Scientists: on Chickens, Bananas, Old Salad Dressing, and More
- FAQs about Food Price Increases
- FAQs about Products We Use with Food
- FAQs about Shelf Life: Tortillas, Pancakes, Wine, and More
- Food Fraud: Are you paying for scallops and getting shark meat?
- Is Cheese Addictive? Only If You Eat It
- Missing Chickens: Where Have All the Small Ones Gone?
- Nine FAQs about Food Labels
- Quiz Yourself! Check Your Knowledge about Food Temperatures
- Scientists Answer Two FAQs about Egg Safety
- Should Sour Cream and Cottage Cheese Be Stored Upside Down?
- Some Shelf Life Info, General and Specific (Spirits, Defrosted Veggies, Green Tea, and More)
- Syrup from a Tree or from a Lab--Which Should You Pour on Your Pancakes?
- Ten FAQs about the Prickly Pineapple
- What's New in Food? IFT Expo Offers Tasty Innovations
- What's on the Menu in Cuba?
- What’s in My Water? Answers to FAQs
- What will you be dining on this year? Here are predictions from folks in the know
- FAQs on Bacteria
- Tips
- Books: Food for Thought
- Food Safety
- It Says "Use By Tomorrow," But You Don't Have To
- Ten Tips for Consumer Food Safety
- Food Allergies: Recognizing and Controlling Them
- “Is It Spoiled?” When in Doubt, Check It Out
- How To Keep Your Cooler Cool
- Recent Recalls: Salmonella Threatens 100s of Products
- STOP! Don’t Rinse That Raw Chicken!
- Sous Vide—A Better Way to Cook?
- Why You Need a Safe Cooking Temperature Chart and How to Get One Right Now
- “Myth-information” about Food Safety: You’d Better Not Believe It
- After The Storm: What You Can Save and What You Must Throw Out
- How to Protect Your Food During a Power Outage
- Meet Your Beef--Via Bar Code Info
- Organic Food, GMOs, the Safety of American Food, the Value of Use-By Dates, and More--Scientists Tell Us What They Think
- Raw chicken, Leftovers, Deli Meats, and More-- What Surveyed Scientists Said
- Tips About 4 Popular Beverages: Wine, Coffee, Water, and Soda
- Tips on Reheating for Safe, Yummy Leftovers
- Tips on Water Safety During and After a Storm
- Introducing our Advisory Board Scientists
- Produce: Handling Tips
- Seasonal Tips
- A Novel Method for Cooking a Turkey
- Crock Pot Cooking Tips for that Ideal Winter Dinner
- Cucumbers: for Cool--and "Cool"--Summer Treats
- Going Away for All or Part of the Winter? Prepare Your Kitchen for your Absence
- How To Grill Safely During the Summer
- How do summer squash and winter squash differ?
- New Year’s Resolutions For a Safer Kitchen
- Preserve the Taste of Summer by Canning—But Do It Safely
- Summer Food Fests Offer Much More than Calories
- Summer Party Tips: Baby Carrots (Using for Dips) Hot Dogs (Ditching the Guilt), and Watermelon (Finding a Ripe One)
- Tailgating: How to Do It Right
- Tips on Keeping Your Summer Fruits Flavorful and Healthy
- Shelf Life Tips
- A Food App You're Apt to Like; A Brand-New Invention for Getting Shelf-Life Information
- Battling the Ripening of Bananas
- Food Preservation--Low-tech Past, High-Tech Present and Future
- From Purchase to Storage, Tips on Extending Shelf Life
- Pesto: Ingredients, Uses, Shelf Life, Contamination, and More
- Shelf Life of Foods: What You Need to Know
- Shellfish and Shelf Life Aid from the Canadian Maritime Provinces
- Tips for Carry-along Lunches for Work and School
- Tips for Freezing Food and Freezer Care
- Cooking Frozen Foods
- Freezers And Food Safety
- Freezers And Freezer Burn
- Freezers And Nutrient Retention
- How Often Should You Defrost And Clean Your Freezer?
- How To Defrost And Clean Your Freezer
- How To Defrost Frozen Foods
- How To Freeze Foods: The Quicker The Better
- How To Wrap Foods For The Freezer
- Refreezing Frozen Foods
- What You Can Freeze And What You Can't--Or Shouldn't
- Tips About Genetically Engineered Foods
- Tips for Grocery Shopping
- Tips for Holidays
- Answers to Questions about Thanksgiving Dinner
- Chocolate Is Even More Healthful Than You Thought
- Enjoy St. Patrick’s Day Without Cabbage Stink
- Everything You Need to Know about Cranberry Sauce
- Food-Related Gifts Recommended by Experts (2014)
- Halloween Treats Even Parents Will Love
- Kitchen Gifts that Really Please
- Kitchen Gifts that Really Work
- Our 2016 List of Gifts To Please Every Cook
- Spring Celebrations: What’s on Your Menu?
- Suggestions for Handling Your Child’s “Trick or Treat” Treasures
- Tips for Winter Holiday Meals
- What NOT to Do With Thanksgiving Dinner
- Yikes! The Turkey Is Done, But the Guests Are Delayed! How Do I Keep My Thanksgiving Dinner Warm?
- Tips on Kitchen Equipment
- Tips for Refrigerating Food and Refrigerator Care
- Food Safety Facts
- How To Clean The Refrigerator
- How To Wrap Foods For Refrigeration
- How long can a pie be left unrefrigerated?
- Power Outage? Here’s What to Do with All That Food in the Fridge
- Proper Handling Of Produce In The Crisper(s)
- Proper Refrigeration Placement Of Raw Meat, Chicken, And Fish
- Six Tips for Extending the Shelf Life of Foods
- What Can and Can't Go In The Fridge Door
- Other Tips
- Microwave Cooking
- The 10 Most Dangerous Foods To Consume While Driving
- Are Your Kids Home Alone after School? Educate Them about Snacking
- Clever Inventions That Can Change Eating Habits
- Coffee, Juice, and Food in Central America
- Eggies™ to the Rescue?
- Ever Eaten “Glued” Food?
- Food Definitions: Umami, Locavore, Fruit, Heirloom, and Artisan
- Hot Dogs: What You Should Know about Them
- If You Don't Know Beans about Beans...
- In Defense of Processed Food
- Kids and Cooking: A Good Combo
- New Uses for Old Food: Try 'Em Out!
- Organic Farming and Organic Food: What Are the Benefits?
- Our Board Scientists Talk about 2015 Food Trends
- Portabella Mushrooms and Their Relatives: How to Handle Them
- Ten Exotic Fruits: Novel Treats to Drink and Eat
- Tips on Fishing and on Selecting Healthful Fish
- Tips on Making Food Appealing, Food Safety and BPA (again)
- Tofu: Water Regularly, Consume Promptly
- Want to get some/all of your protein from plants? We'll tell you what's tasty
- What This Site Is All About and How to Navigate It
- What We're Eating This Year: Ancient Grains, Coconut Oil, Kale, and More
- About Us
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Can turkey leftovers be reheated more than once?
It’s not a good idea. According to a food scientist Susan Brewer, every time the bird or stuffing passes through the 40°F-140°F zone, bacteria are given an additional opportunity to grow. Err on the conservative side. Don't reheat the same food more than once.
Source(s):
Susan Brewer, Ph.D., University of Illinois, Department of Food Science and Human Nutrition
