Question: How can I have ice cold water in my water bottle from home?
Options:
Fill bottle 1/3 way with water, lay on it's side freeze, then fill with cool water when you leave the house.
Fill bottle 1/3 way with buttermilk, lay on it's side freeze, then fill with cool water when you leave the house.
Answer: Fill bottle 1/3 way with water, lay on it's side freeze, then fill with cool water when you leave the house.