*(Title alteration courtesy and thanks to anyjazz65)
This is a clever advertising item in the form of an empty, but still sealed, tin can from BERNARD FOOD INDUSTRIES, INC., MANUFACTURERS AND DISTRIBUTERS TO THE NATION'S FINE EATING ESTABLISHMENTS.
The label says "BERNARD DEHYDRATED WATER" and gives the following instructions for use: "EMPTY CONTENTS OF CAN INTO ONE GALLON OF WATER. STIR UNTIL DISSOLVED. CHILL AND SERVE." This "product" is even covered by U.S. Patent Office Trademark No. 898826!