Chemie und Liebe (1948)

Michael Alland, a chemist and his assistant Martina, make a groundbreaking discovery. They manage to make butter directly from pasture grass without having to deal with either the cow or the use of dairy products. An industrialist attempts to seize the invention for himself. To do so he sends countless women to Alland to seduce him and steal the formula. But the attempts prove to be unsuccessful, for Alland has discovered he has feelings for his assistant.