Which of these products is not extruded?

Extrusion is a process commonly used in the food industry where ingredients are forced through a machine to create specific shapes and textures. This method is particularly prevalent for products that require a unique texture, such as cereals, snacks, and pasta.

Cereals are often extruded to create a variety of shapes and achieve a crispy texture. Snacks, such as puffed corn snacks and potato chips, frequently go through the extrusion process to obtain their light and airy consistency. Pasta is also traditionally made through extrusion, where dough is pushed through molds to create different shapes like spaghetti or macaroni.

In contrast, deli meats are typically produced through processes such as curing, smoking, and slicing rather than extrusion. These methods focus on flavor development and preservation rather than shaping through mechanical means. Thus, deli meats do not undergo the extruding process, making it the correct answer in this context.