I have similar recipes fpr elderflower and elderberry wine, using six kilos of sugar to 23 litres of water. both have the same additives, yeast, acid mix and nutrient but the elderberry is ready to kill at about 3 weeks but the elderberry takes about six weeks. Both are the same temperature, I use about 2 ounces of dried flowers and 500g of dried berries.
Topic fermentation homebrew
Category Mac
The elderberry wine has a good deal more nutrients in it, since it uses the whole berries. You won't get a lot of nutrients from the elderflowers themselves.
Yeast are more than just a way to turn sugar into alcohol and CO2 - they have complex nutritional needs at different stages of their growth. Generally whole fruit can provide everything they need - but the closer you get to simple sugar water, the more the yeast will struggle to perform the chemical reactions needed at different stages of their lifecycle.
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