Perfect for my cold process soap making. I use it for the lye mix. Weigh water into this pitcher. Weigh lye in a Pyrex measure cup. Pour lye into the water. There is always lye left in the cup that doesn't come out clean, so I pour the liquid back from the pitcher into the Pyrex cup to get all the lye (wear gloves & be careful of splashing). I cool the lye mix in a rubber container of cold water. This brings the temperature down a lot faster for the Impatien..