Verified Answer :

  • Hot food must be held at a temperature that prevents bacterial growth, known as the "danger zone" threshold.
  • The FDA Food Code establishes the minimum safe temperature for hot holding as \(135^{\circ}\text{F} \ (57^{\circ}\text{C})\).
  • Temperatures lower than this range allow bacteria to multiply rapidly.
  • Therefore, the correct minimum temperature is \(\boxed{135^{\circ}\text{F} \ (57^{\circ}\text{C})}\).

Explanation

  1. Analysis of Food Safety Standards

The problem requires identifying the minimum internal temperature for hot food held for service to ensure food safety. According to the FDA Food Code, which sets the standard for food safety in the United States, hot food must be maintained at a minimum temperature to inhibit the growth of pathogenic microorganisms. Bacteria typically grow most rapidly in the "danger zone," which is between \(41^{\circ}\text{F}\) (\(5^{\circ}\text{C}\)) and \(135^{\circ}\text{F}\) (\(57^{\circ}\text{C}\)). Therefore, to safely hold hot food, the temperature must be kept at or above this upper limit.

  1. Comparing Options to Regulations

Reviewing the provided options in light of the standard safety regulation:

  • \(115^{\circ}\text{F} \ (46^{\circ}\text{C})\) is too low and falls within the danger zone.
  • \(125^{\circ}\text{F} \ (52^{\circ}\text{C})\) is also too low and falls within the danger zone.
  • \(135^{\circ}\text{F} \ (57^{\circ}\text{C})\) is the established minimum temperature for hot holding.
  • \(145^{\circ}\text{F} \ (63^{\circ}\text{C})\) is a safe temperature, but it is not the minimum required threshold; \(135^{\circ}\text{F}\) is the regulatory baseline.

Thus, the correct minimum internal temperature is \(135^{\circ}\text{F} \ (57^{\circ}\text{C})\).

Examples

In a professional kitchen, such as a school cafeteria or a restaurant buffet, staff must constantly monitor food temperatures. Using calibrated thermometers, they verify that soup, roast beef, or mashed potatoes stored in a steam table are held at least at \(135^{\circ}\text{F}\). This simple practice ensures that customers are protected from foodborne illnesses, keeping the dining experience safe and enjoyable for everyone.