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User Guides (1st Gen Combustion Tools)

Predictive Thermometer

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Range-Extending Display

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Range-Extending Booster

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How the Predictive Thermometer works (1st Gen)

Call out of location of minimum insertion line (about halfway down the thermometer).

Instant Read Mode

The Predictive Thermometer wakes up in Instant Read mode. Wake it up by removing it from the charger or Booster.

You’ll know the thermometer is awake when the Display or Combustion App starts displaying temps. It takes less than a second. 

It takes 3-4 seconds to accurately report the “instant read” temperature at the pointy end. 

Instant read turns off when you set a target temp on the Display or app (Predictive Cooking Mode).

The instant read temperature is not necessarily the same as the “core” temp. Core temp is determined after you set a target temp. Look below to learn more about TrueCore®.

line art showing minimum insertion lines

Predictive Cooking (with Display)

Insert the Predictive Thermometer to at least the min line. 

Press m- and s+ buttons to set the “cooking to” temperature.

Press “start” – the "cooking to" temp will stop blinking.

Apply heat (oven, smoker, grill, frying pan, etc… you get the idea).

The Display shows progress by indicating % of cooking completed.

At about 33% a countdown will appear: “ready in.” That’s the prediction! 

The "core" temp displayed is the TrueCore® temp – the lowest of the internal sensors.

When that number hits 00:00, an alarm will sound to let you know your food is ready.

Enjoy!

Predictive Cooking (with App)

Insert the Predictive Thermometer to at least the min line (deeper is preferred). 

Tap "predict" on the main screen.

Set your temp, then tap "begin prediction."

Then follow the same steps as above.

To choose between Cº and Fº: tap the three dots (right edge of the app, near ready in).

Demonstration of the location of the 8 sensors in the Combustion Predictive Thermometer.

8 sensors give you Total Temperature Awareness®

Having “extra” sensors allows the Combustion Predictive Thermometer to do things that other thermometers can’t, including finding the actual lowest internal temperature - even if your insertion is off the mark.

TrueCore® detection - prevents undercooking

By comparing temps, the Predictive Thermometer finds the TrueCore® temp, which is the coolest part of the food.

That's the accurate internal temp. Even if your probe is off center, or if the food is small (filet) or asymmetric (like a chicken or fish) -- the Predictive Thermometer still finds it!

Demonstration of how the Combustion Predictive Thermometer finds the TrueCore temp in a beef filet (aka filet mignon steak).
Demonstration of how the Combustion Predictive Thermometer finds the TrueSurface temp on a beef filet (aka filet mignon steak).

Surface temp - the real cooking temperature

Water evaporating from the surface of food cools the food a lot, and surface is the temperature the food actually feels as it cooks.

The internal temp can never get hotter than the surface (until it’s cooling).

Press the temp button on the display to toggle temps (TrueCore® – TrueSurface® – TrueAmbient®).

Ambient temp - your oven is lying

The ambient temp will be lower than your oven (or smoker) is set to, sometimes by 100 degrees or more. Don’t panic! This is normal. The temp near the surface of your food is much cooler.

Relatively cool (212ºF) steam coming from the food mixes with the hot surrounding air, and the TrueAmbient™ temp reflects that.

A roast creates its own weather!

Diagram of temperature zones throughout a rib roast, showing the location of the boundary layer.
Illustration of the 8 sensors creating a graph of live temps.

All the important stuff is calculated inside the thermometer itself

With other “smart” thermometers, the important data are stored and critical calculations are done remotely - on your phone or in the cloud. The Predictive Thermometer does everything onboard!

If the connection ever gets interrupted, all the "missing" data appears on reconnect.

Use MeatNet™ tools to extend wireless range

Cooking set-ups are full of radio obstacles. Use a range-extender - the Booster or Display - near your smoker/grill to catch and boost the weakened signal.

Each MeatNet™ tool adds up to 330ft (100m) of unobstructed signal strength.

For best signal, keep a clear line-of-sight between linked tools. 

Close-up of the Combustion Range-Extending Booster.
A perfectly cooked steak, sliced neatly and sprinkled with herbs.

Resting your meat

Carryover (resting) is not part of the prediction. The only real advantage to resting meat is that it's easier to carve.

Slice steaks/filets/smaller foods immediately to minimize carryover.

Don’t be afraid to scrub

The ceramic handle is very strong and scratch resistant. Use steel wool or abrasive cleansers (e.g. Barkeeper’s Friend) to make the yellow handle shiny and new again.

Use a non-abrasive scrubby on the steel probe.

Don’t “quench” a hot thermometer - wait for it to cool before soaking. 

Don't Quench! Don't run a hot thermometer under cold water - the temperature shock can break things.
 

Reference Guide: Temps

Automated food safety with SafeCook™

The Combustion App tells you when your food is safe to eat, applying the food-safety standards of the US government (USDA/FDA).

TLDR: with the Predictive Thermometer, you can cook safely without overcooking your food.

The SafeCook feature is very easy to use and the Predictive Thermometer does all the math.

With it, you never have to overcook anything “just to be sure.”

Select your protein + preparation.

SafeCook tracks combined time-and-temps as your food heats up. It's a rolling count of bacterial destruction.

Using time + temp is just as effective as reaching a very high temp (and far tastier!).

Cooking at 150ºF for 4.2 min is just as effective as cooking to 165ºF.

Either method eliminates bacteria by the millions (99.99999% is the USDA-safe level for chicken).

More details here

Chef-recommended temps

What temperature you cook to depends not only on the protein you're cooking, but the style of cooking and your preferred results. It's a matter of taste.

Listing preferred cooking temps would require a huge page of its own (or maybe a whole site), but here are some of the temps we use frequently (remember, home cooking is at your own risk):

  • Salmon: 120ºF/49ºC
  • Steak (med rare): 128ºF/54ºC
  • Pork chop (med rare): 140ºF/60ºC
  • Hamburger (med): 140ºF/60ºC
  • Chicken (breast): 150ºF/65ºC (for 3 minutes+)
  • Bread: 207ºF/97ºC

Cook below USDA food safety standards at your own risk.

(P.S. Every professional chef does.)

Carryover times + temps

We don't recommend resting for most things, but there are some times when it's very useful.

If you plan to rest your food, set the target temp lower to compensate and leave the thermometer in. That way you'll know exactly when to slice and quickly cool your food if it's in danger of going too high.

Carryover effects can vary greatly (depending on temperature differential, water content, mass, and surface area), but they are repeatable with the same cut and same cooking plan.

Keep track! You might not nail it on the first try, but with the Predictive Thermometer you can tune it in.

We're still working on getting a precise-enough carryover prediction to be worthwhile. We've got a whole math team for that!