Solano County, California. Solano County is a county located in the U.S. state of California. As of the 2010 census, the population was 413,344. The county seat is Fairfield. Solano County comprises the Vallejo-Fairfield, CA Metropolitan Statistical Area, which is also included in the San Jose-San Francisco-Oakland, CA Combined Statistical Area.
Potentially hazardous food, such as cooked hamburger, should be left at room temperature for no more than 2 hours or one hour if the ambient temperature is very warm. At that point, the food should be refrigerated or reheated. Was this answer useful?
Frozen hamburger should be thawed in the refrigerator, where it can be kept cold enough to prohibit the growth of harmful bacteria. It can also be thawed in the microwave or by wrapping it in a watertight plastic bag and soaking it in cold water, changing the water every 30 minutes. Hamburger meat thawed in the refrigerator can be refrozen within two days, whereas meat thawed in a microwave or in cold water cannot be refrozen.