How do you say cereal in latin?

There isn't a single perfect translation for "cereal" in Latin because the word encompasses a range of grains and prepared breakfasts that didn't exist in the Roman world in the same way. However, depending on what aspect of "cereal" you want to emphasize, you could use several options:

* frumentum: This refers to grain in general, encompassing wheat, barley, oats, etc. This is probably the closest single-word equivalent if you're talking about the grains themselves.

* far: This is specifically wheat flour, but could be used in a broader context if discussing a breakfast made from flour.

* puls: This refers to porridge, a food made from boiled grain. This is a good option if you're talking about a cooked cereal.

* A phrase: For more accuracy, you might need a descriptive phrase, like "frumentum coctum lacte" (grain cooked with milk) if describing a specific kind of cereal.

Therefore, the best translation depends heavily on the context. There's no single perfect Latin word for "cereal."