What is this floating bobbing stuff in my wine?

Question

Hey there,I recently embarked upon winemaking and have about 6 demijohnsbubbling away. However, one gallon that i made with Dandelions petalsand some pineapple juice (i was feeling adventurous!) has devloped afrothy looking surface layer that looks a bit like curdled milk. Thereis also a layer of this 'stuff' at the bottom. Fermentation is strongbut these little globules of 'stuff' bob up and down and circulatearound the demijohn passing between the two layers.What is this - is the wine useless, or is this some natural yeastthing that may have come with the Dandelions i picked?There is no unpleasant smell that i can detect, just the slightlyyeasty smell that wine usually has.Thanks!Melissa

Joe Sallustio · Accepted Answer

Souinds like a clupm of yeast being siuspended by CO2, stir it up.

Simon Reed · Answer

In article , Melissa  writesLast autumn I made 3 demijohns of pear + melon + pineapple wine.  Thatbehaved exactly the same way.  It is now almost perfectly clear and thesediment has settled down.That floating surface layer on mine was the colour of condensed milk andabout an inch thick.  It looked disgusting.  The fluffy bits thatfloated up and sank down were interesting.  That's all gone now andbecome sediment.It smells delicious: I really ought to be thinking about bottling itnow.

Simon Reed · Answer

In article , Joe Sallustio  writesHowever, every time you interfere with it you risk contamination.With demijohns, you can just 'swirl' them without taking the bung out.

What is this floating bobbing stuff in my wine?

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