Is my wine yeast still viable?

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dibattista

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I pitched a packet of expired EC-11118 into my Welch's White Grape Pear wine (based off of Yooper's Welchs Grape Juice wine) approx. 24 hours ago and there is absolutely no movement. Approx. how long should I wait to pitch another packet? Also, will a new yeast strain (Lalvin 71B-1122) create "off-flavors"?
 
If you have dead yeast from the 1118 then they will just be cannibalized by the 71-b. I see no reason for off flavors. Some times there is no visable fermentation within 48 hours. My last batch took 30 hours. Try and stir it up and whip some oxygen into the must. Add a little energizer like 1/4 tsp and see where it goes over anoter 24 hours. Then look into pitching new yeast.
 
it depends on how expired it is but just for the record dont use expired yeast, the date is there for a reason....
 
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