<prompt> Translate the following text to SwahiliHe 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.  <response>: Kefir 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. 