The paper towel will absorb any excess moisture in the container, preventing the leaves from wilting so quickly.
One user wrote: “I usually transfer to a Tupperware, one layer of paper towel on the bottom, fill halfway, another paper towel, fill the rest.”
Another said having a container with a grate at the bottom could help. Put the paper towel below the grate, and it both absorbs water and keeps it separated from the spinach.
