It depends a lot on how poor one was. Some had extreme diets of potatoes and milk or buttermilk with rare variations. Others incorporated oats and other vegetables and meat when they could afford it. But the best stuff was taken for sale in Britain.
Imagine 6-12 lbs potatoes and a cup or two of milk, day in, day out!
https://www.dochara.com/the-irish/food-history/food-in-irela...
Colonialism is miserable.
