Add water, cloves, cinnamon sticks, lemon peel and vanilla to a large pot and heat to a boil
While waiting for pot to boil add sugar and lemon juice
Allow the pot to boil for about 5-7 minutes
While waiting for pot to boil, remove cherry pits and stems if not done already
Remove pot from heat and add cherries
Add pot to heat and allow to boil with cherries for 7 minutes
In a medium bowl, mix flour and sour cream together. Add about 2 ladles full of soup to the flour and sour cream and whisk together, removing any lumps and blending the mixture together
Turn heat on low and add the flour and sour cream mixture to the soup
Add salt and let soup simmer for 5 minutes
Remove soup from heat and allow time for it to cool. It should be served cold, so you may want to prepare a day to a few hours ahead