Care Instructions Care Info: You've put a lot of care into choosing your furnishings. And with continued care at home, they should share your address for many years to come. Now for your owner's manual… Large Working Glass Avoid severe temperature change; bring to room temperature. Never transfer a cold container directly to oven/microwave. Do not place hot container on wet or cold surface. Do not add liquid to very hot or very cold dish. If the glass is chipped or cracked, discard immediately.