Well. First you have to make an essence from Syrian-Rue seeds. Its very simple. Cook 30g of SR seeds with 1 cup of water and ½ a cup of lemon juice for 30 minutes on small heat. Then let it cool down. When its cool enough fill it into a 500 ml glas bottle (please, no plastic!) and add the same amount of water and lemon juice to make it 500 ml.