Vegetable oil supermarket shelves go through a deodorization stage that removes trace amounts of odors and flavors, and lightens the color of the oil. People can breathe in vegetable oil mist in the workplace. The U.S. Occupational Safety and Health Administration (OSHA) has set the legal limit (permissible exposure limit) for vegetable oil mist exposure in the workplace as 15 mg/m total exposure and 5 mg/m respiratory exposure over an 8-hour workday. The U.S. National Institute for Occupational Safety and Health (NIOSH) has set a recommended exposure limit (REL) of 10 mg/m total exposure and 5 mg/m respiratory exposure over an 8-hour
Sarawak layer cake must have at least two colours. The cake can be baked in an oven or microwave. The batter uses butter or vegetable oil, milk and eggs, and requires a strong arm or electric mixer to be properly prepared. The baked cake has a high, firm texture and the layers are fastened together with jam or a similarly sticky sweet substance. More detailed cakes often require special moulds to maintain the perfect layer thickness. In Malaysia, "kek lapis Sarawak" (Sarawak layer cake) has been a protected geographical indication since 2010. This means that any product may only be called "kek lapis