Rhino farts are the yeasts way of saying "I'm unhappy"
As brewers we want to know WHY they are unhappy.
Fortunately many have walked down that path and have shared their wisdom with us so that we may learn from their mistakes.
Basically it comes down to one of two reasons (usually...there can allways be an exception)
1 - too warm of fermentation temperature.
Fernebtation creates heat. Inside your brew may even be up to 10-F warmer than the rooms ambient air temp. Usually i have found it to be 5=f warmer but ypur milage may vary.
2 - lack of yeast nutrient/energiser.
Apple juice besides sugar has almost nothing that yeast want to eat. If you were locked into a small room with a pile of sugar on the table you could eat it as a source of carbs but you wouldn't be very happy about it (or healthy) yeast react in the same way. Give them some nutrient for a healthier yeast and therefore better cider.
Somebody above mentioned that going to the homebrew store is a trip for them. A "cheap and easy" alternative would be to buy some raisins (no preservatives at all) and use them as the yeast nutrient. A box of raisins is like 50-80 cents and sold at every grocery store on the planet pretty much.
Hope this helps.
As brewers we want to know WHY they are unhappy.
Fortunately many have walked down that path and have shared their wisdom with us so that we may learn from their mistakes.
Basically it comes down to one of two reasons (usually...there can allways be an exception)
1 - too warm of fermentation temperature.
Fernebtation creates heat. Inside your brew may even be up to 10-F warmer than the rooms ambient air temp. Usually i have found it to be 5=f warmer but ypur milage may vary.
2 - lack of yeast nutrient/energiser.
Apple juice besides sugar has almost nothing that yeast want to eat. If you were locked into a small room with a pile of sugar on the table you could eat it as a source of carbs but you wouldn't be very happy about it (or healthy) yeast react in the same way. Give them some nutrient for a healthier yeast and therefore better cider.
Somebody above mentioned that going to the homebrew store is a trip for them. A "cheap and easy" alternative would be to buy some raisins (no preservatives at all) and use them as the yeast nutrient. A box of raisins is like 50-80 cents and sold at every grocery store on the planet pretty much.
Hope this helps.