Herbed Vegetable Soup

• 1 thyme sprigs (fresh)
• 700 ml water
• 240 ml nonfat buttermilk
• 80 gr onion (chopped)
• 30 ml lemon juice
• 30 ml chicken bouillon granules
• 2 gr thyme (minced fresh)
• 1 gr marjoram (minced fresh)
• 1 gr pepper (white)
• 4 slices carrots