Which item has the longest hold time on the list provided?

The item with the longest hold time is jalapeños. This is because jalapeños, especially when pickled or prepared in a way that preserves them, maintain their quality and safety for consumption over a longer period than other items listed, such as guacamole or sour cream, which are more perishable due to their ingredients and moisture content.

Cheddar cheese does have a good shelf life, but it typically doesn't exceed that of jalapeños in a fast-food context where efficiency and potential waste are considered. Guacamole is particularly sensitive to oxidation and can spoil quickly once exposed to air. Sour cream also has a relatively short life due to its high moisture content, which promotes spoilage. Therefore, jalapeños can be held for a longer duration before needing replacement, making them the correct choice.