A saddle point on the graph of z=x 2 ây 2 (in red). Saddle point between two hills (the intersection of the figure-eight-contour). In mathematics, a saddle point is a point in the domain of a function that is a stationary point but not a local extremum.
Hot food should be kept hot, at or above 140Â° F. 1  Wrap it well and place it in an insulated container until serving. 2  Just as with cold food - these foods should not sit out for more than 2 hours, or 1 hour in temperatures above 90Â° F. If food is left out longer, throw it away to be safe.
Food left out of the refrigerator is okay to eat for about 2 hours. If the temperature is under 80 degrees. The longer a food stays in the danger zone the more risk you take e â¦ ating that food. Foods should either be kept hot or kept cold before eating to be really safe.