Ts'ebetsong ea tlhahiso ea biri, ho hlokahala ho sefa le ho etsa sterilization.Sepheo sa ho sefa ke ho tlosa lisele tsa tomoso le lintho tse ling tse ferekaneng ka har'a biri nakong ea ho belisoa, joalo ka hop resin, tannin, yeast, bacteria ea lactic acid, protheine le litšila tse ling, e le hore u ka ...
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