Farl is actually the sort form of Fardel, Fardel literally means four part,its the mixture of 2 words - ferde which means four and del which means part.

Originally, Farl is a small thin triangular cake or biscuit made especially with oatmeal or wheat flour.They are shaped from a circle of dough cut into quarters. They are part of a family of Irish potato breads and pancakes which include boxty, potato fadge and stampy. Traditionally they were made with oatmeal, butter and potatoes – no flour, no bicarbonate of soda. But it's worth experimenting to get the texture you want. The less flour and bicarb you use, the denser and moister the farl. Using more flour and bicarb and moistening the mixture with milk creates an increasingly light and fluffy bread‑like substance.