First we need to boil the ginger syrup. Take a ginger root, peel and cut into strips. In a saucepan, mix 300 ml of water and 4 tbsp sugar. Add the ginger, bring to a boil and low down the heat to low. Cook 25-30 minutes. The syrup should be a third. It should then drain and leave to cool. This syrup in a tightly closed container can be stored in the refrigerator up to a month.

The leaves of sorrel is carefully washed and dried. Then grind to a state of "almost mash" any suitable cooking device. I was helped in this difficult task simple immersion blender.

The resulting mass is cheerful green mixed with 0.5 l of water 200 ml ginger syrup and lemon juice. Leave to infuse in the refrigerator for 10 to 15 minutes. For those who love sweeter, I suggest adding 1-2 tbsp of sugar.

Then strain through a fine sieve and add the remaining 0.5 l water silnogazirovannoy. In a large pot to a third volume to cover over the ice, pour lemonade and garnish with lemon slices. To use immediately.