When you decide to purchase rock candies; try to choose rock candies with wooden sticks. Plastic sticks in contact with hot drinks may release toxins which hazardous to the health. The side effects of these toxins are similar to the toxins of disposable containers.
Rock candies in small packages are healthier than the open and bulk type because they might be stored in unsafe warehouses for a long time. Also check the expire date of the product.
The crystalls transparency shows the quality of product. So, try to choose the rock candies which are more transparent and its crystals are outstanding .