If you have some cornstarch, just take 1 tbsp cornstarch and whisk with 2 tbsp water. Then add to the soup and stir until combined.u003cbr/u003eu003cbr/u003eYou’ll want to do this when the soup is still simmering as that helps activate the cornstarch to help thicken it. You can also control the thickness by how much you puree everything.