Did you know that it was a common practice to use sweetened condensed milk, or canned evaporated milk, as creamer in the early part of the 20th century?  Without refrigeration, and without a cow, canned milk was the perfect solution.  Because both types of canned milk are more concentrated than fresh milk, they add a creamy richness to your coffee or tea, similar to cream or half and half, without adding all of the extra fat.