2. Tilt the cup and slowly pour the soda down the inside of the cup to make as few bubbles as possible. 3. Place a straw in the soda and look at the straw from the side. 4. Take the straw out of the ...

Fill the cup with warm water. 2. Add 1 tablespoon of baking soda and a splash of vinegar ... Clean with mild detergent. 4. For straws and lids: While some brands such as Hydro Flask offer straw ...