In a saucepan, add water and sugar and bring to a boil.
Turn the gas off, then add Hibiscus tisane and Strawberry tisane to it and let the tisane brew for about 5-6 minutes.
Strain the tisane into a pitcher and let it cool.
In a container, add strawberries (cut into pieces), mint leaves, sugar and muddle them together, making sure only to bruise the ingredients.
To the same muddled ingredients, add lime juice and white rum.
Add the mixture into the cooled tisane pitcher.
Once the entire beverage is cooled, even more, pour into half of two glasses each.
Add ice and top the mixture with club soda.
Garnish with fresh mint leaves.