The Xian Taima Fanta series of flavorings is worth trying.

Not a single orange variety: Fanta's orange flavor doesn't imitate a single type of orange (such as navel oranges or blood oranges), but rather creates an "idealized," highly recognizable complex orange aroma through the blending of various citrus flavorings (possibly including sweet oranges, tangerines, grapefruits, etc.).

Leaning towards "peel-like" notes: The aroma carries a refreshing, slightly bitter scent similar to orange peel essential oil, creating layers of flavor that prevent it from being overly sweet.

Synergy with carbonation: The flavoring is designed to complement the stimulating sensation of carbonated drinks. The aroma is strong and penetrating, quickly releasing when the bubbles burst, creating a refreshing and invigorating experience.

Balanced acidity: Typically paired with acidulants such as citric acid, the flavoring may contain acidic citrus elements like lemon and lime to enhance the vibrancy of the taste.

Masking the syrup taste: Fanta has a high sugar content, so the flavoring needs sufficient concentration and stability to mask the cloying sweetness of the syrup and leave a lingering aftertaste.

The "perfect" quality of artificial flavoring: Compared to natural orange juice, Fanta's aroma is more persistent, consistent, and unaffected by seasonal variations, reflecting the consistency of industrial flavoring.

Regional adjustments: Fanta formulas may vary slightly in different countries/regions. For example, some regions use natural flavorings, while others may use entirely artificial flavorings; Japan has "Fanta Orange" (using Japanese citrus flavors), and Italy has "Fanta Citrus," among other localized variations.

Color and aroma association: The iconic bright orange color (or other colors corresponding to different fruit flavors) uses pigments and flavorings to reinforce the mental association of the flavor (e.g., "orange color = orange flavor").

Besides the classic orange flavor, Fanta also offers a variety of other flavors, including grape, apple, pineapple, and mango. The flavorings for these varieties also follow the principle of being "intense, distinct, and suitable for carbonated beverages," typically highlighting the most representative aromatic characteristics of each fruit (such as the candy-like sweetness of grape or the refreshing taste of apple).