Final Answer:
The Southwest Fajita Omelette and Denver Omelette are topped with sour cream.
Step-by-step explanation:
The Southwest Fajita Omelette and Denver Omelette, both featured on the menu, come with a finishing touch of sour cream. These omelettes are likely to offer a savory combination of ingredients, with the Southwest Fajita version possibly incorporating flavors reminiscent of southwestern cuisine, while the Denver Omelette may include a classic mix of diced ham, onions, and bell peppers. The addition of sour cream serves as a complementary element, adding a creamy and tangy note to enhance the overall taste and texture of the dish.