<prompt> Translate the following text to EnglishKefir na mchuzi wa kipekee wa kipekee wa kipekee, lakini sio sana, kwa sababu mikono yake ilikuwa ikitetemeka, kisha bado ilibidi kuchanganya na kuongeza nambari chache za E.  <response>: He added more kefir and home-made kefir flavor, but not too much, because his hands were shaking, then he still had to mix it and add a few E-numbers. 