Mix cornstarch with 2 Tbsp water. Put in a pot with other ingredients. Bring to a boil and let it simmer until everything is heated through. Adjust seasonings to your liking.
Put part (or all) of the ingredients in a blender and blend until smooth. You can also use an immersion blender. Return back to the pot. Stir to combine.
Pour soup into serving bowls, garnish with hard boiled egg slices, chopped jalapenos, paprika and chives (optional).