Final answer:
In tea lattes, the default syrup that is typically added varies by establishment but often it is vanilla. Customers can also personalize their level of sweetness using non-caloric sweetener packets in varying colors that represent different sweetener types, such as aspartame, saccharin, sucralose, monk fruit extract, and stevia.
Step-by-step explanation:
The question regarding tea lattes pertains to the type of syrup typically added by default when they are served. Generally, the default syrup in tea lattes will vary depending on the establishment and the type of tea latte being served. However, a common default syrup used is vanilla for its ability to complement various tea flavors. When it comes to sweeteners, in a restaurant setting, customers may further customize their beverage sweetness using packets of non-caloric sweeteners, which can include blue packets for aspartame, pink for saccharin or cyclamate, yellow for sucralose, orange for monk fruit extract, and green for stevia. These options provide a way to add sweetness without contributing additional calories, which is particularly appealing for those looking for lower-calorie options to enjoy their favorite tea lattes.