|lemon — halved, juice only|
|1 tsp||citric acid|
|wine — sparkling|
Place all the ingredients in a saucepan and heat over a medium heat while stirring until the sugar is dissolved.
Bring to the boil, take off the heat and allow to cool.
Taste if the cordial needs some extra lemon juice.
Serve 1 part cordial to 3 parts bubbly over lots of ice and garnish with fresh mint.
Keep any leftover cordial in a clean and airtight container, refrigerated for up to 4 weeks.
Makes about 750 ml cordial.