Why Sous Vide Chicken May Have an Off-Odor

Sous vide cooking involves vacuum sealing food in a plastic bag and then cooking it in a precisely temperature-controlled water bath. This low and slow cooking method results in incredibly tender and juicy meat. However, sometimes sous vide chicken can develop an unpleasant or foul odor.

There are a few reasons why properly cooked sous vide chicken may have an off-odor:


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Anova Culinary AN400-US00 Nano Sous Vide Precision Cooker, 12.8" x 2.2" x 4.1", Black
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IMPRESA [10 pack] Sous Vide Magnets to Keep Bags Submerged & In Place - Sous Vide Accessories to Stop Floating Bags & Undercooking - Great Alternative to Sous Vide Weights, Balls, Clips, & Racks
Anova Culinary ANVS01-US00 Anova Precision Vacuum Sealer, Includes 10 Precut Bags, For Sous Vide and Food Storage
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Anova Culinary AN400-US00 Nano Sous Vide Precision Cooker, 12.8" x 2.2" x 4.1", Black
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$99.00
Anova Precision Cooker Container 12L
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$129.00
IMPRESA [10 pack] Sous Vide Magnets to Keep Bags Submerged & In Place - Sous Vide Accessories to Stop Floating Bags & Undercooking - Great Alternative to Sous Vide Weights, Balls, Clips, & Racks
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Anova Culinary ANVS01-US00 Anova Precision Vacuum Sealer, Includes 10 Precut Bags, For Sous Vide and Food Storage
Anova Culinary ANVS01-US00 Anova Precision Vacuum Sealer, Includes 10 Precut Bags, For Sous Vide and Food Storage
$79.00
Wevac Vacuum Sealer Bags 8x50, 11x50 Rolls 2 pack for Food Saver, Seal a Meal, Weston. Commercial Grade, BPA Free, Heavy Duty, Great for vac storage, Meal Prep or Sous Vide
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Lactic Acid Bacteria

One of the most common culprits behind the off-odor is the presence of lactic acid bacteria. Lactic acid bacteria are found naturally on meat and poultry. Examples include Lactobacillus and Pediococcus.

When chicken is vacuum sealed and cooked sous vide, these lactic acid bacteria thrive. As the bacteria grow, they produce lactic acid. This lactic acid breaks down over time and causes a sour, foul smell.

The bacteria also produce carbon dioxide and other metabolic byproducts that lead to the unappealing odors. The odors are often described as slimy, rotten, or sulfurous.

While the smell is unappealing, the lactic acid bacteria present on sous vide chicken are not harmful or dangerous.

Vacuum Sealing Process

The vacuum sealing process used in sous vide cooking can also contribute to odors.

When the chicken is vacuum sealed, air and excess moisture are removed from the package. This anaerobic environment allows the naturally present lactic acid bacteria to flourish.

If the bag is not sealed properly or air pockets remain, this can also increase off-odors. Air provides oxygen which supports the growth of spoilage microorganisms.

Properly vacuum sealing the chicken using a food-grade vacuum sealer allows you to maximize on the benefits of sous vide cooking while minimizing unwanted odors.

Cooking Time and Temperature

The cooking time and temperature used can also impact smells.

Cooking the chicken sous vide at too low of a temperature for too short of a time may not adequately control bacteria growth. The bacteria continue to grow and produce smelly compounds.

Additionally, an extended cooking time allows for more breakdown of compounds like lactic acid into smelly byproducts.

Following proper guidelines for temperature and cooking times helps reduce the chances of off-odors developing.

Quality of the Chicken

The quality and freshness of the raw chicken also plays a role. Older, poorer quality chicken is more likely to have higher levels of bacteria present. This leads to more rapid growth of lactic acid bacteria and foul odors when cooked sous vide.

Fresh, high-quality chicken that has been properly handled and stored has lower bacteria loads, reducing the likelihood of pronounced odors.

How to Prevent Off-Odors in Sous Vide Chicken

While an off-odor in sous vide chicken does not necessarily indicate spoilage or make it unsafe, the smell can be unappetizing. Luckily, there are several ways to prevent or reduce the chances of funky smells.

Properly Clean and Prepare the Chicken

Prior to cooking, rinse the chicken under cold water and pat it dry. This helps remove excess surface bacteria that can multiply during extended sous vide cooking.

Avoid cross-contaminating other foods, utensils, and surfaces by properly cleaning all items that contact raw chicken.

Trimming excess fat and skin that can harbor higher bacteria loads may also help reduce odors.

Adjust Cooking Time and Temperature

Sticking to recommended cooking times and temperatures is key. For chicken breasts, 145°F (63°C) for 1 to 4 hours is ideal. For bone-in, skin-on chicken, around 150°F (65°C) to 155°F (68°C) for 2 to 5 hours is recommended.

Higher temperatures help stop bacteria growth in its tracks, while too low and slow leads to increased odors.

Always fully cook chicken to an internal temperature of 165°F (74°C) after the sous vide bath to destroy any remaining harmful bacteria.

Use Fresh, High-Quality Chicken

Choose fresh chicken that has been properly refrigerated at 40°F (4°C) or below. Check the use-by date and pick chicken that will not expire soon.

Avoid chicken with an off-color or slimy appearance. Yellow, green, or gray colored chicken may indicate spoilage.

Higher quality, fresh chicken has less bacteria present initially, reducing off-odors.

Properly Store and Handle the Chicken

Store raw chicken in the coldest part of the refrigerator and use within a day or two for best results. Freeze chicken if not using within a few days.

Avoid defrosting frozen chicken on the counter, as bacteria can start multiplying rapidly above 40°F (4°C). Defrost in the refrigerator overnight instead.

Prevent cross-contamination by keeping raw chicken away from ready-to-eat foods, promptly refrigerating leftovers, and washing hands, utensils, and surfaces after contact.

Use a Food-Grade Vacuum Sealer

Invest in a high-quality vacuum sealer designed specifically for sous vide. Food grade vacuum sealers allow you to achieve a tight seal and maximum vacuum, extracting the most air and moisture.

This anaerobic environment helps inhibit the growth of odor-causing bacteria. Make sure to follow the manufacturer’s directions for proper use.

Is Sous Vide Chicken with an Off-Odor Safe to Eat?

The main concern with smelly sous vide chicken is whether it is safe to eat, not just the unappealing odor.

Chicken that has been properly cooked sous vide according to established time and temperature guidelines is generally safe to eat, even with some off-odors.

Keep in mind sous vide chicken must still reach an internal temperature of 165°F (74°C) after cooking to destroy illness-causing pathogens. Properly cooked chicken is safe even if it has an odd smell.

However, if the chicken has a particularly putrid, rotten smell or has an unusual appearance like sliminess or fuzziness, it is best to discard it. These can indicate spoilage and possible bacterial overgrowth.

When unsure if sous vide chicken is safe, remember the old adage “when in doubt, throw it out.” Safety comes first.

You can also attempt to remove mild off-odors through searing, added marinades or spices, or baking after cooking sous vide. This may cover up smells while also ensuring chicken reaches 165°F.

How to Remove Off-Odors from Sous Vide Chicken

If your just-cooked sous vide chicken has developed a bit of a stench, all is not lost. There are a few tricks you can try to remove mild odors:

  • Browning the exterior: Finish sous vide chicken by searing the outside in a hot pan or grilling it. This browning adds lots of flavorful aromas that help mask odors.
  • Marinating: Soak the cooked chicken in a marinade in the fridge for several hours or up to a day before searing. Tomato juice, yogurt, lemon juice, vinegar, and wine all help neutralize odors.
  • Baking: Baking the chicken after sous vide cooking helps eliminate odors. Bake at 375°F to 400°F for around 15 minutes until cooked through.
  • Smothering: Coat the chicken in boldly-flavored sauces, glazes, or spice rubs. Strong ingredients like BBQ sauce, Indian spices, or Cajun seasonings cover up smells.
  • Storing properly: Allowing the chicken to cool rapidly after cooking, then chilling it, can prevent odors from getting worse over time. Proper refrigeration stops bacteria growth.

Conclusion: Enjoying Safe and Delicious Sous Vide Chicken

While the occasional off-odor can be unpleasant, it does not have to deter you from enjoying properly cooked sous vide chicken. Now that you know what causes smells and how to prevent them, you can continue cooking mouthwatering chicken through this popular modern technique.

Remember to start with high-quality fresh chicken, seal it thoroughly under vacuum, and use precise time and temperature controls. If odors arise, finishes like searing or bold sauces can mask the smell while killing any remaining bacteria.

Mastering the ins and outs of safe and effective sous vide chicken cookery allows you to serve up succulent, fool-proof poultry. Let your nose guide you while also adhering to sound food safety principles.

With the proper techniques, even those sensitive to off-putting odors can fully appreciate the delectable flavors and textures of chicken cooked slowly to tender perfection through sous vide methods. So breathe deep and enjoy the tasty benefits of properly prepared sous vide fare.