Typical Americana. Cutting up and packaging in extra foil what could simply be sold as a larger brick.

See also, milk bags.

Bricks won't fit in our butter trays. And it'd be an ordeal to open a brick, quarter it, then put the opened 3/4 of the brick back into cold storage until needed again.

Our butter isn't wrapped in foil, each stick is wrapped in wax paper and the whole thing is boxed in thin cardboard.

fancy butter is sometimes in foil, https://www.kerrygoldusa.com for example