vegetable or chicken stockamount depends on quantity of vegetables, enough to cover them~6 cupsest.
floursifted and whisked into soup to thicken~2 tbspest.
heavy cream~½ cupest.
cornstarchoptional, mixed with equal parts cold water to thicken further~1 tbspest.
frozen cornoptional addition~1 cupest.
Steps
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1
Sauté the chopped onion and mushrooms in the pot with a bit of salt to help release their moisture, cooking until the liquid evaporates and the texture improves.
2
Add the thinly sliced garlic and sauté for about a minute without burning it, then stir in the fresh sage, rosemary, and any other herbs on hand.
3
Add the cleaned and chopped leek (white and light green parts), scallions, red bell pepper, and small-cut celery, stirring to combine.
4
Add the cut carrots, sweet potato, and diced baking potatoes so all the vegetables are in the pot.
5
Pour in vegetable or chicken stock until it just covers the vegetables plus a bit more, since the potatoes will release starch and thicken the soup as they cook.
6
Bring to a boil, then simmer until all the vegetables are tender, which takes roughly an hour to an hour and a half depending on how large the vegetables were cut.
7
Test the vegetables with a fork for doneness, checking the carrots and sweet potato first since they take the longest to cook.
8
For a thicker, silkier texture, sift some flour into a bit of the hot soup liquid through a strainer and whisk until completely smooth with no lumps.
9
Stir the flour mixture back into the soup and add a splash of cream to adjust the richness and consistency.
10
Let the soup simmer gently for about 10 to 15 minutes so the raw flour taste cooks out completely.
11
For extra thickness, mix cornstarch with equal parts cold water and stir a little at a time into the boiling soup until you reach the desired consistency; thin with more stock if it gets too thick.
12
Taste and adjust the seasoning with salt and pepper, optionally stirring in some frozen corn for extra flavor, then serve hot.