Final answer:
Offer a sample of meat or cheese when a customer is interested, sliced hygienically and provided with information to encourage sales.
Step-by-step explanation:
When slicing lunch meat and cheese, offering a sample is an opportunity to showcase the product's quality and flavor to the customers. This can be done when a customer shows interest or inquires about a particular product. The best practice is to slice a small piece of the product using the same slicer at the thinness that the customer desires for their purchase.
Before offering the sample, ensure it's done hygienically, using gloves or tongs, and place it on a clean surface like a piece of deli paper. It's also important to offer the sample with a friendly smile and provide any necessary information about the product, which could lead to customer satisfaction and potential sales.