What is the maximum cold-holding temperature allowed for shredded lettuce? a. 32°F (0°C) b. 35°F (2°C) c. 38°F (3°C) d. 41°F (5°C)
The Correct Answer and Explanation is:
Correct Answer: d. 41°F (5°C)
Explanation:
Shredded lettuce, like most cut leafy greens, is considered a Time/Temperature Control for Safety (TCS) food. These types of food items require careful temperature control to prevent the growth of harmful bacteria that could lead to foodborne illnesses.
According to the U.S. Food and Drug Administration (FDA) Food Code, the maximum cold-holding temperature for TCS foods, including shredded lettuce, is 41°F (5°C). This regulation ensures that food stays out of the temperature danger zone, which ranges from 41°F to 135°F (5°C to 57°C). Within this range, bacteria such as Salmonella, Listeria monocytogenes, and E. coli can multiply rapidly.
Shredded lettuce is especially vulnerable to bacterial growth because the cutting process damages cell walls, releasing nutrients and moisture that create an ideal environment for pathogens. Additionally, the increased surface area due to shredding allows bacteria to colonize more easily. If shredded lettuce is kept above 41°F for extended periods, it becomes a high-risk food.
While it is safe to store shredded lettuce at temperatures colder than 41°F—such as 32°F or 35°F—41°F is the maximum allowable cold-holding temperature under food safety regulations, not the recommended or ideal temperature. Temperatures lower than 41°F are preferred for longer shelf life and better texture retention, but legally and for inspection purposes, 41°F is the upper limit.
Food service establishments are required to monitor and document cold-holding temperatures to stay compliant with health regulations. Failure to keep shredded lettuce at or below 41°F can result in health code violations and increased risk of foodborne outbreaks.
In summary, the correct answer is d. 41°F (5°C) because it is the maximum allowable temperature for safely storing shredded lettuce under U.S. food safety standards.
