Bring soup to a boil, reduce heat, cover, and simmer for 5 minutes. 1. * Add 2 cups of the Peas and simmer, covered, for 10 minutes. 2. * Remove from heat and add remaining 2 cups of water. 3. * Puree in batches in a blender until smooth. return to the pot, add the last cup of Peas, and cook on medium heat for 3–5 minutes.