Sous Vide

Sous vide (pronounced "soo-VEED") is a cooking method where food is sealed in a bag and cooked in a water bath held at a precise, constant temperature. The name is French for "under vacuum," referring to the vacuum-sealed bags originally used in the technique. It produces results that are nearly impossible to achieve with conventional cooking: edge-to-edge doneness with no gradient of overcooked meat near the surface.

How to pronounce sous vide

It is two syllables: soo-VEED. The "s" in "sous" is silent, and the "d" in "vide" is pronounced. Many English speakers mistakenly say "soo-VYD" or drop the final "d" — both are incorrect. The phrase rhymes with "new creed."

How sous vide works

The basic process has three parts:

1. Season and seal. Season the food and place it in a heat-safe bag. Remove the air using a vacuum sealer or the water displacement method (slowly lowering a zip-lock bag into water to push air out).
2. Cook in a water bath. Submerge the bag in water held at a target temperature by an immersion circulator or sous vide machine. The circulator maintains temperature within ±0.1°C, so there is zero guesswork.
3. Finish. For proteins, a quick sear in a ripping-hot pan or with a torch adds the browned crust that sous vide alone cannot create. This final step triggers the Maillard reaction — the same chemistry behind a great steak crust.

Because the water never exceeds your target temperature, the food cannot overcook beyond that point. A steak set to 54°C (129°F) will be 54°C from edge to edge, not just at the center.

A brief history

Sous vide was developed in the early 1970s in France. Engineer Georges Prud'homme first described vacuum-cooking for industrial food preservation, and chef Bruno Goussault began researching the effects of temperature on various foods. The technique gained its first fine-dining application when chef Georges Blanc used it to cook foie gras — the vacuum seal prevented the significant fat loss that occurred with traditional methods.

Through the 1980s and 1990s, sous vide remained a restaurant secret. High equipment costs kept it out of home kitchens. That changed around 2010 when affordable immersion circulators hit the consumer market, dropping from several thousand dollars to under $100. Today it is one of the most accessible precision cooking tools available.

Common sous vide uses

Sous vide vs other cooking methods

Advantages

Precision. You pick the exact internal temperature. A medium-rare steak is medium-rare throughout, not just in the center with a gray band around it.

Consistency. Once you find a time and temperature you like, you can reproduce it every single time. No more guessing.

Hands-off cooking. Set it and walk away. Most sous vide cooks have a wide time window — a steak is equally good at 1 hour or 3 hours in the bath.

Hard to overcook. Since the water never exceeds the target temperature, food reaches equilibrium and holds there. A chicken breast at 65°C cannot become 75°C in a 65°C bath.

Better yields. Conventional high-heat cooking causes moisture loss through evaporation. Sealed bags retain nearly all the juices. Meat typically loses 5-10% of its weight sous vide versus 20-30% with traditional roasting.

Limitations

No browning. A water bath cannot produce the Maillard reaction. You need a finishing step — a screaming-hot cast iron pan, a grill, or a kitchen torch — to get color and crust.

Longer cook times. Water at 54°C heats food much more slowly than a 230°C oven. A steak takes 1-4 hours sous vide versus 10-15 minutes on a grill.

Equipment required. You need an immersion circulator and bags at minimum. Vacuum sealers are helpful but not strictly necessary (zip-lock bags work for most cooks).

Texture preferences. Some people find sous vide proteins — especially chicken and pork — unfamiliar in texture. The even doneness can read as "soft" compared to the firmer texture from higher-heat methods. This is a matter of taste, not a flaw.

Tips for getting started

Start with steak. It shows the biggest difference from conventional cooking and is forgiving on time.

Dry the surface before searing. Pat the protein thoroughly with paper towels after removing it from the bag. Moisture is the enemy of a good crust.

Use carryover cooking awareness. The finishing sear adds heat. Keep it very short (45-60 seconds per side) to avoid pushing the interior temperature past your target.

Save the bag juices. The liquid in the bag is concentrated, flavorful stock. Reduce it in a pan for a quick sauce.

Sous vide in Fond

Fond's recipe timers help you track long sous vide cooks without watching the clock. Set a timer for your target cook window, and Fond notifies you when it is time to pull the bag and start the finishing sear.

For a complete walkthrough, see our sous vide beginner's guide.