Cordials

• 500g frozen mixed berries, thawed
• 2 teaspoons tartaric acid
• 1/2 cup lemon juice
• 1 1/2 cups caster sugar
• 1 cup boiling water

Place berries, tartaric acid, lemon juice and sugar in a heatproof bowl. Add boiling water. Stir until sugar has dissolved. Strain through a sieve, pressing with the back of a spoon, into a large, heatproof jug. Pour into hot, sterilized bottles and seal. Refrigerate until chilled.
Serve using 1/3 cup cordial to 2/3 cup chilled sparkling mineral water or iced water. Serve with frozen raspberries.