What is a potato flatcake?

"Potato flatcake" is not a common culinary term, so it's hard to say for sure what it means. It could be a few things:

1. A flatbread made with mashed potatoes: This is the most likely interpretation. It could be a simple recipe using mashed potatoes as the primary ingredient, possibly with some flour for binding.

2. A thin potato pancake: This could also be called a "potato fritter" or "potato latke." These are typically made with grated potatoes, flour, and egg, then fried until crispy.

3. A specific regional dish: Perhaps there is a regional dish with a unique name like "potato flatcake" that is not widely known.

To get a better understanding, you could try these:

* Clarify the context: Where did you see this term? What was the recipe or description associated with it?

* Search online: Try searching for "potato flatcake" and see if any recipes or information come up.

* Ask for more information: If you got the term from a person, ask them for more details about what they mean.

Without more context, it's difficult to give a definitive answer, but hopefully, this gives you some ideas to explore!