Chill them in the freezer for at least 2 hours before using them and do not let your drink rest in the them for more than 5 minutes before serving. Ideal for herbal tea, pallet cleanser shots, tequila, craft gin and much more. Himalayan Salt is naturally anti-bacterial, so these glasses require little maintenance and are easy to clean. Just a quick rinse and it is ready for next use. For our other Kitchen Products click here - KITCHEN ACCESSORIES.