Bovril Beef Hot Drink A Good Defence Against InfluenzaOriginal vintage food advertising poster for Bovril Bovril is a good defence against influenza featuring bold black lettering on a white background with black borders on the top and bottom. Printed in Britain in the 1930s, this campaign used puns and word play to resemble the public announcement propaganda posters of the time. Developed by John Lawson Johnston in the 1870s, Bovril is a beef meat extract paste often used to make a hot drink or added as