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The British use of the term refers to a plain, soft roll, usually topped with flour before baking. Originally, its name came from the heavily-flavored barm leaven. Barm is created during fermentation of yeast, often during the process of making ale or lager. When scraped from the top of the liquid, barm was often combined with hops and was originally used as the yeast agent in barm bread. Today, most barm cakes are made with regular yeast. Unfortinately the superior muffin has overtaken the barm and it is the muffin which is often found in fish and chip shops as chip muffins.
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