Final answer:
The food worker should wash their hands at least three times: after taking a lunch break, before cutting tomatoes, and before preparing ready-to-eat salads.
Step-by-step explanation:
According to food safety guidelines, the food worker should wash their hands at least three times in this scenario.
- After taking a lunch break.
- Before cutting tomatoes.
- Before preparing ready-to-eat salads.
Handwashing is crucial in preventing the spread of foodborne diseases, especially when handling different types of foods to avoid cross-contamination. It is important to wash hands thoroughly with soap and water for at least 20 seconds each time.