What is the smell at the start of fermentation?

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Pronay

Pronay

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Hi, I'm making a tinned Strawberry wine, I was just wondering what the funky smell is that often occurs, sort of like eggs. I've made a few similar wines and the smell has always cleared, but I'm just wondering what causes it
 
Pronay said:
Hi, I'm making a tinned Strawberry wine, I was just wondering what the funky smell is that often occurs, sort of like eggs. I've made a few similar wines and the smell has always cleared, but I'm just wondering what causes it
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that is the ever popular "rhino farts" - that would be sulphur - it's normal by product of fermentation with certain fruits and yeast strains - adding yeast nutrient to some yeast/must combos will somtimes keep it in check (evidently montrachet and applejuice is notorious for it) - though I've never experienced it, as i use nutrients - a lighter than advised amount to be sure, but it still goes in - on every batch
 

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