why do some foods, like pickels, still come in a glass jar, but most beverages, like milk, have migrated to waxed paper or plastic containers?

Question

why do some foods, like pickels, still come in a glass jar, but most beverages, like milk, have migrated to waxed paper or plastic containers?

In: Chemistry

Answer 1

Pickles need canning jars, jars of milk. Easier to use material which is least likely to compose over hundreds of years.