Blood Orage Sour

The dish you're referring to is likely called "Blood Orange Sorbet" or "Blood Orange Sorbetto." Sorbet is a frozen dessert made from sweetened fruit juice, and in this case, it is made with blood oranges, which are a type of orange with a crimson flesh and a strong, sweet-tart flavor.

Blood orange sorbet is a refreshing and tangy dessert, often served as a palate cleanser between courses in upscale restaurants. Some variations of this dish may include a hint of alcohol, such as Grand Marnier or Cointreau, for an added depth of flavor.

This dish can be found in restaurants across the USA, particularly those that focus on modern or innovative cuisine. It's a great option for those who are looking for a light and fruity dessert, and it's also a vegan-friendly option, as it does not contain any dairy products.