Mix, whisk and beat sauces, spreads and mixtures, hot or cold, with the Anchor Hocking Glass Mixing Bowl 4L. Made from borosilicate glass, the Anchor Glass mixing bowls are safe to use in the dishwasher, oven, microwave and freezer. NOTE: Do not subject the glass bowl to opposite extreme temperatures (e.g. from freezer to oven and vice versa) rapidly. Allow the bowl to reach room temperature before placing in freezer or oven.