1. First of all, Starbucks Frappuccino syrup depends on the formal pre-packaging. Products require that the product label must indicate the product name, composition, net content and other information.

2. Secondly, look at the packaging. High-quality frappuccino syrup requires clean appearance and clear trademark.

3. Finally, the high-quality syrup has uniform texture, natural color and no bubbles, suspended solids, sediments and impurities.