Used a couple of US recipes recently and most of the ingredients are in cups, or spoons, not by weight. This is a nightmare to convert. Do Americans not own scales or something? What's the reason for measuring everything by volume?
What's troublesome with that is American cups are something like 237ml and a Canadian cup is 250ml, a quart a litre and a gallon 4 litres.
Makes using American recipes a bit finicky. So now I convert recipes to weight. Though I basically never use a scale or measuring cup when actually cooking.