Mom's vegetable soup

Ok, I can tell a lot of stories about my mom, but she defininetly cannot cook, although she went to culinary school for a year (I guess she quit because she did so badly).

But what she is good at is making soups and stews. Nothing fancy, but dishes which have the typical "mom" taste to me. Pure comfort food.
Yesterday I managed to recreate her veggie soup. She forms balls of bratwurst meat to simmer in the broth, I took some sosmix (seasoned with salt, pepper, paprika and some tamari), rolled it into balls and sautéed them to add them short before the soup was done.
Use your favourite sort of no-meetballs if you can't get sosmix or just leave it out.

Here is the recipe, though I didn't really measure.

For 4-6 people:

1 leek, chopped into rings
1 cup of cauliflower florets
some halved brussels sprouts
1 carrot, chopped
1 onion, chopped
half a celery stalk, chopped
2 cups green beans (I use runner beans), cut in 1 inch-sized strips
2 medium potatoes, peeled and cut into cubes
salt + pepper, maybe 1 tsp vegetable boullion powder

In a huge saucepan, sauté the carrot, leek, and celerey in some oil at medium heat for about 10 minutes (it's ok for the onions and leek to brown a bit, it only gives the soup more flavour).
Add remaining ingredients and about 4 cups of water and let simmer for about half and hour.
When almost done, add meetballs of your choice and spice it up.

It doesn't photograph well, but it freezes amazingly and is even better reheated the next day!