Why does the finished citrus liqueur taste too bitter, cloudy or pithy?

Expanded Explanation

Excess bitterness usually comes from too much white pith, over-infused grapefruit peel or cacao nibs left in contact with the vodka for too long. Dried peel should be thin, aromatic and mostly free of the pale inner layer. Pink peppercorns can also create a dry, perfumed edge if crushed heavily or infused beyond the point where their warmth supports the citrus.

Cloudiness is most often caused by the fresh grapefruit, orange and lemon juices, which introduce pulp, pectin and fine suspended particles. Citrus oils extracted from the peels may also form a haze when the alcohol is diluted by juice and dissolved sweeteners. This is not automatically a safety problem, but it can affect appearance and may create sediment during maturation.

To correct the batch, chill it thoroughly, allow it to settle and filter it slowly through several layers of cheesecloth or a coffee filter. If bitterness is mild, add small measured amounts of sugar syrup or honey solution and retaste after twenty-four hours. Severe pith bitterness is difficult to remove completely, so prevention through careful peeling, regular tasting and timely straining is the best approach.