Review on Tovolo Sphere Ice Molds (Set of 2) - Perfect for Chilled Drinks and Cocktails! by Sarah Green

They are great for the price. The way I drink pure, expensive spirits has completely changed. It will cloud, crack, and melt faster if you do it right. PRO TIP FOR HARD CLEAR ICE: Fill with pre-boiled/filtered or distilled water and place upside down in a very small refrigerator with 1/2 inch of water. Matching fridge: MIER Soft cooler bag Small insulated lunch bag for children, girls and boys (green). You'll need to put your finger over the hole to prevent it from leaking and make sure they stay level. Freezer. As ice crystals form, they become less dense than water, so they freeze from top to bottom, forcing the gas out of solution. Place a hole on the bottom with water to hold the seal to allow air to escape. Close the fridge for slower freezing, which takes around 2-3 days depending on the temperature. See photos before and after. You don't have to spend crazy money on clear ice makers.