Walder Science Center Kitchen Science Forums

Showing posts with label Equipment. Show all posts
Showing posts with label Equipment. Show all posts

Thursday, January 16, 2014

How to Temper Chocolate

You can find a very informative and interesting set of instructions from packaging of the chocolate tempering thermometer by:

Component Design Northwest, Inc. Model #TCH130 www.cdn-timeandtemp.com
Here's the link, but I also listed it on the side of the blog, too.

Using a meat thermometer



The last thing that you would want is for a guest of yours to contract Salmonella or E Coli. To make sure that doesn’t happen, you must know that the center of the meat or fish has been adequately cooked. Once you know that the center of fish has achieved 140°F (60°C) and the center of meat 160°F (72°C), then you also know that not only has the center cooked, but that also all the meat surrounding the center is safe (harmful bacteria has been killed).

Using a meat thermometer that probes the interior of meat will let you know when your meat is safe to eat and not under or over cooked. Additionally, by keeping the thermometer inside the meat at a buffet table, you can monitor the meats internal temperature to keep it safe.
In the meanwhile, don’t lose sight of 2 important side points: 1) meat continues to cook internally after being removed from the fire. 2) The rate at which the meat’s surface heats up is faster that the center. Cooking at a lower, but safe temperature for a longer period of time will avoid drying and burning of the meat’s surface.

Using a deep fry / candy thermometer



When deep frying and making candy, the temperature of the liquids reaches a very high level. For example, caramelizing sugar heightens the temperature of the liquefied sugar to a level in excess of 300°F (149°C)! An oven thermometer which is manufactured to measure the heated air inside an oven is not adequate to measure the heat of the center of a liquid.

A special thermometer for candy making and deep frying is inserted into the liquid during the heating process. Usually the thermometer is very long for safety purposes so that you don’t burn yourself. Also, a hook attaching the thermometer to the side of the pot makes sure that it measures the temperature of the liquid and not of the pot.