In a pot heat oil and add curry. Stir it around to make sure it does not burn, do this until it starts smelling good. Then add onions and stir for a couple of minutes till the onions get soft. Add garlic. If the bottom of the pot becomes dry, add a little broth instead of oil to moisten things up.
Add tomatoes, broth, vinegar and thyme. Bring to a boil and then let it simmer for 15-20 minutes or longer time if you want to.
Remove thyme sprigs and add sour cream. Blend the soup and remember to adjust the taste for more vinegar and/or salt.
Notes
Serve with toasted rye bread and ripe avocado slices plus a lot of extra sour cream, sooo yummy! Enjoy :)