From Oh She Glows
Yield: 3 servings
1. Add oil to a large pot and sauté the garlic and mustard seeds for a few minutes over medium-high heat, until the mustard seeds begin to pop. Be careful not to burn them. Add in the onion and sauté for another 5 minutes, or until the onions are translucent.
2. Add the celery, potato, split peas, broth, and spices. Stir to combine. Bring to a boil and simmer on low-medium heat uncovered for 20-30 minutes, or until the split peas are cooked through and the potatoes are tender.
3. With a ladle, carefully transfer about 3 cups of the soup into a blender (leave some of the pouring hole ajar so stream can escape). Starting at a low speed, puree the soup until smooth and pour it back into the pot and stir. (Note: You can also use an immersion blender if desired.) Cook for 5 minutes and then serve immediately with fresh parsley and a pinch of smoked paprika, if desired.