It is wax paper, for several reasons. It is a kind of paper. It is far older than aluminum foil. It may bear the quaint name Cut-Rite. And it appears in John Steinbeck’s The Grapes of Wrath (1939):
At noon the tractor driver stopped sometimes near a tenant house and opened his lunch: sandwiches wrapped in waxed paper, white bread, pickle, cheese, Spam, a piece of pie branded like an engine part.“Wax paper,” to my mind, is dowdier than “waxed paper.” (Older too: 1844 v. 1853.) “Wax” recalls wax beans, one of the dowdiest canned vegetables — and one of the most disturbing.
All OCA “dowdy world” posts (Pinboard)
[For most American consumers, Cut-Rite is wax paper. When I make a sandwich to go, I always use Cut-Rite and foil. And yes, that tractor driver is destroying people’s livelihoods.]