Veggie soup with thyme and marjoram

The original recipe says chicken stock instead of the stock-cube but thats what we didnt have at home now, so I stuck with the good old cubes.
 Its the perfect lunch for Sister, and other job-seekers before an interview.

Ingredients:

• 3 carrots
• 1 onion
• 2 sticks of celery
• 3 potatoes
• bit of olive oil
• marjoram
•  fresh thyme
• salt, pepper
• 1 bay leaf
• 2 dl of sour cream
• about 1 and a half litre of water
• 2 stock-cubes

Chop the onion, not too fine and put them onto a bit of olive oil, start softening them, after adding salt to it. Meanwhile peel the carrots and slice them. Slice the sticks of celery too. Add them to the onion and stir them well. Braise them for a while and then add the thyme leaves , the bay leaf and the marjoram, and then add the water, bring it to a boil and then add the two cubes (this is whats on the box, I actually dissolved the cubes in the water and added it then, and it worked). During that peel the potatoes, and slice them into equal pieces, and when the carrots are 80% soft, add the potatoes. It softens in about 10 minutes. When its ready, get it off the heat so that it doesnt boil, and add the sour cream. Then put it back to the heat and bring it to a boil again. You can edd extra salt to taste and freshy ground pepper also fits it well.