This is a brilliant refresher for hot summer days. You'll find food grade citric acid at a health food store or Asian market.
great recipe - 05 Jun 2010 (Review from Allrecipes US | Canada)
Every time my elderberry tree has flowers I make this drink and have done for years. My recipe is almost identical to this one used. I no longer buy mix-up cordial for my family, we much prefer to drink this. I tend to mix it with water for everyday drinking but for a special twist we use soda water and mint leaves or strawberries. My children always helpl make this recipe. - 15 Aug 2010 (Review from Allrecipes AU | NZ)