Put the stock in a really big pot and bring to a boil. while you are waiting chop all the greens very small, cube potatoes, slice carrots and onions (not the green ones!). Boil together the potato, onion and garlic if you are using it for 5 minutes. Reduce heat and add all the greens and carrot pieces, cover and simmer for 25-30 minutes. Remove from heat and mix in soy milk and soy sour cream.
This is supposed to have chunk of beef and eggs in it, but this non-traditional version is really good, too! It's also apparently not very Russian to put garlic in everything, but I think it is good for you and recommend throwin it in anyway. :)