We lived in the UK (Wales) for 5 months so I was familiar with the measurements and language in the recipe. I did kind of Americanize it a bit with good results. I subbed a yellow pepper for the green pepper (I think the green would have overwhelmed the recipe), 1-12oz can of evaporated milk for the 1/2 pint milk and 1/4 pint double cream (which I cooked until it was thickened) and the only English cheese I could find at the local grocers was an 8oz package of Double Gloucester so I used that instead of the 6 oz of Lancashire cheese. What came out of the oven was flavor soaked potatoes highlighted by peppers and cheese. For any other Americans making this recipe 1/2oz butter is 1T, a courgette is a zucchini and I think that Â½ oz plain flour is about 2-3 T.