Safterei
The cold-pressed juices produced by Safterei are made by a form of pasteurization known as Pascalization or High pressure processing (HPP). Instead of using heat for preservation, the raw juice is exposed to be pressured by thousands of pounds. Using this method the flavor and the nutritional value of the juice is not damaged.
Must
Official Roman Catholic documents define must ("mustum" in Latin) precisely as "grape juice that is either fresh or preserved by methods that suspend its fermentation without altering its nature (for example, freezing)", and it excludes pasteurized grape juice.