In fact, as there is no evidence for the existence of the 'chemical brew' it is more likely than not that it never existed, and without it there seems to be no reason to believe that the production of small amounts of amino acids by some electrical charges can really have anything to do with the origin of life.
The ol' brew may not have ever had to exist on earth, though I'm quite certain some version of it did: a big variety of amino acids and other "biomolecules", including things like the vitamin niacin, have been found in pristine meteorites. Plentiful raw materials that are made in stars and interstellar clouds combine under the influence of ultraviolet light to make precursors for these chemicals - you just add water and there they are. And as the early Earth's atmosphere was essentially oxygen-free, those that survived passage through the atmosphere could accumulate.
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