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Lucy Madden
Easy
By Lucy Madden
Published 2015
This is much nicer than it sounds as the beer gives the potatoes a robust and almost meaty flavour.
Using 1 oz (25 g) of the butter grease a gratin dish and into this put the potatoes and onions in layers, seasoning as you go. Dab with the rest of the butter in little pats.
Pour over the be