Velouté Tomato Soup

Ingredients

• 1 can diced tomatoes 28 oz or 2 X14,5 oz
• 1 tablespoon tomato paste
• 1 big potato or 2 small cut into small cubes
• 1 big carrot or 2 small cut into small pieces
• 2 stalks celery cut into small pieces
• 1 small onion chopped
• 1-2 clove(s) of garlic minced
• 1/4 cup olive oil
• 1 teaspoon sugar
• 1/4 teaspoon nutmeg
• 1/4 teaspoon cumin
• 1/4 teaspoon oregano
• salt and pepper
• greek yogurt
• croutons