The Doppler Effect Flow meter uses reflected ultrasonic sound waves to measure the velocity of particles in the fluid. By measuring the frequency shift between the ultrasonic frequency source, the fluid carrier, and the receiver, the relative fluid velocity is measured.
How long it took to freeze will have a bearing on it, too. If the ground beef was 3 days old when frozen, you might try cooking it from frozen. If it was freshly ground when frozen, the thawed meat will likely be good for 2 days. Once thawed, the ground meat should be used within a day or two. Ground meat spoils quickly since grinding the meat mixes bacteria throughout.
Do I still have to cook the meat right away? Answer: Youâve got some breathing room. Ground beef thatâs been defrosted in the fridge can be safely kept for an additional one to two days in the refrigerator before cooking, says the U.S. Department of Agriculture. And since you thawed the ground beef in the fridge, you can also safely refreeze it within that same timeframe, says the USDA. None of this would apply, on the other hand, if you had thawed the ground beef in the microwave or in cold water. You should immediately cook meat thawed under either of those methods, advises the USDA, since it could easily warm up to the 40Â°F temperature at which harmful bacteria begins to multiply rapidly.