I made this very quickly and simply the other day. Hope you enjoy.
1 onion roughly chopped
5 or 6 carrots peeled and roughly chopped
1 head of celery washed and roughly chopped
1 potato, peeled and you guessed it
A bit of garlic (if you fancy)
A good dose of tarragon
Salt and pepper
This couldn't be simpler - boil all the vegetables in the water, add the salt, pepper and tarragon. Once cooked, blend to a puree, return to the heat, add cream and cook for a little while longer, check seasoning and serve.
How simple was that?
A dash of cream