Some recipes call for sweetened condensed milk. Many Indian desserts are fried foods made with sugar, milk or condensed milk. Liquid oxygen may also be condensed from air using liquid nitrogen as a coolant. Strawberries contain both hydrolyzable and condensed tannins. Its presence prevents coagulation in the preparation of condensed milk. Radon is condensed by liquid nitrogen and purified from residue gases by sublimation. It is a colorless gas that is easily condensed to a liquid. The juice is sometimes condensed and eaten as candies. This steam is subsequently condensed into salt-free water. The preparation results in a column of white condensed water vapour cloud. After evaporation, the water vapor is condensed onto a cool surface. Qi is in a perpetual transformation between its condensed and diluted state. Helvetica Narrow is a version where its width is between Helvetica Compressed and Helvetica Condensed. Turpentine may alternatively be condensed from destructive distillation of pine wood. The propionaldehyde vapor is immediately condensed into a suitable receiver.