Simmer uncovered to reduce the liquid
Whisk in a cornstarch slurry
Whisk in a flour slurry
Add a roux
Stir in mashed potatoes
Blend in pureed vegetables
Add arrowroot slurry
Add tapioca starch slurry
Stir in instant potato flakes
Add gelatin
Use xanthan gum sparingly
Add a beurre manié
Incorporate cream or coconut milk
Blend part of the broth and return it to the pot