What additional option does Saltgrass often provide for customers ordering their chili?

Sour cream is a common accompaniment for chili because it adds a creamy texture and a cooling effect that balances the spiciness of the dish. This combination enhances the overall flavor profile and makes the chili more enjoyable for many diners. It provides a contrast in consistency and temperature, which is appealing. Sour cream is widely recognized as a traditional topping for chili, making it a suitable addition that complements the dish well. While other options may also be served with chili, sour cream stands out as a classic and popular choice among customers.