The “Press Your Thumb” Meat Test Is Unreliable — Even Chefs Use a Thermometer

You’ve been there. You’re cooking chicken breasts or a nice thick steak. You don’t want to overcook it, but you definitely don’t want to serve raw poultry. So, you press the meat, comparing the bounce to the base of your thumb. Or worse, you cut it open “just to check,” watching all those hard-earned juices bleed out onto the cutting board.
When in doubt, you leave it in the pan for an extra five minutes “just to be safe.” The result? Chewy, rubbery chicken and gray, well-done steaks.
The truth is, guessing doneness by touch or sight is a gamble that even professional chefs refuse to take. If you want to stop ruining good meat, you don’t need years of culinary school. You just need the best instant read thermometer you can get your hands on. It’s the only way to cook with absolute certainty.
Why the thumb test fails (and why you need the best instant read thermometer)
💡 Here’s the knack:
The doneness of meat isn’t about time, color, or how bouncy it feels. It is purely a matter of internal temperature. Collagen begins to shrink at specific temperatures, squeezing out moisture. According to the USDA safe temperature guidelines, a chicken breast is safe and juicy at exactly 165°F (74°C) at its center. A medium-rare steak hits its peak at 135°F (57°C). Because every stove, pan, and cut of meat is different, time and touch are incredibly inconsistent variables. A thermometer bypasses the guesswork and turns cooking into an exact, repeatable science.
The Fix: Lavatools Javelin PRO Duo
Professional kitchens rely on speed and accuracy. For home cooks, the Lavatools Javelin PRO Duo is widely considered the best instant read thermometer for the price and performance.

- ⭐ Knack Approved
★★★★★ 5/5 - 🏆 Voted #1 mid-priced thermometer by America’s Test Kitchen and Wirecutter and #1 thermometer by NBC News
- ⚡ Ultra-fast 2–3 second readouts thanks to a proprietary high-performance Japanese sensor
- 🎯 Superb accuracy of ±0.5°F achievable via laboratory calibration
- 📺 A large 2″ 180° auto-rotating and motion-activated backlit display
- 💧 IP65-rated water resistant
Lavatools Javelin® PRO Duo Ultra-Fast
How to use it correctly: Insert the metal probe into the thickest part of the meat, avoiding the bone or deep fat pockets. Don’t wait for the meat to look “done” on the outside; start checking it early. Remember that meat continues to cook after you take it off the heat (known as carryover cooking). Pull your steak off the pan about 5 degrees before your target temperature.
Quick answers
Do I really need a thermometer if I follow recipe times?
Yes. Recipe times are estimates. Your oven’s calibration, the thickness of your pan, and the starting temperature of the meat all drastically change cooking times.
Is it safe to leave the thermometer in the meat while it cooks?
No. Instant-read thermometers have electronics in the head that will melt in the oven. Only insert it for a few seconds to check the temp, then remove it.
How do I clean my instant-read thermometer?
Wipe the metal probe with hot, soapy water or a sanitizing wipe after every use. Never submerge the digital display unit in water.


Related Knacks
Stop relying on the thumb test, and stop cutting your steaks open to check the color. Upgrading to the best instant read thermometer is the single fastest way to instantly improve your cooking. That’s the knack.
