Hong Kong style baos can generally be stored in the freezer for up to 2 to 3 months while maintaining their quality. However, it's important to note that freezing can affect the texture and taste of the baos to some extent. To ensure the best quality, it's recommended to consume them within the first month of freezing. Additionally, proper packaging is crucial to prevent freezer burn and maintain the flavor. Use airtight containers or wrap the baos tightly in plastic wrap or aluminum foil before placing them in the freezer.