Cheap, quick and easy mushroom soup

I love mushrooms.  They taste nice, they go well on things, in things, they’re inexpensive and contain only 13 calories per 100g.  And today’s soup must be one of the easiest soups in the world ever.

Ingredients (serves 5)

Big bag of mushrooms
1 onion
2 cloves of garlic
2,500ml vegetable stock
Mushroom ketchup
Dried thyme
Salt and pepper

1. Chop up the onion.
2. Cook the onion in some stock while you’re chopping up the mushrooms.
3. Add the mushrooms and the rest of the stock to the onion.
4. Add the garlic, mushroom ketchup and dried thyme.
5. Simmer for about 15 minutes.
6. Add the salt and pepper and blend it a bit.