Pulp fiction

What is “pulp”?
1. A soft moist shapeless mass of matter.
2.
a. The soft moist part of fruit.
b. Plant matter remaining after a process, such as the extraction of juice by pressure, has been completed: apple pulp.
3. The soft pith forming the contents of the stem of a plant.
4. A mixture of cellulose material, such as wood, paper, and rags, ground up and moistened to make paper.
5. The soft tissue forming the inner structure of a tooth and containing nerves and blood vessels.
6. A mixture of crushed ore and water.
7.
a. A publication, such as a magazine or book, containing lurid subject matter: "The pulps took the mystery story out of the parlors ... and onto the 'mean streets'“.
b. Lurid or sensational writing or subject matter: made a good living writing pulp.

Quarter-Pounder with Cheese