Babcia's Bratwurst and Celery Root Soup

Ingredients

• 1 cup celery root, peeled and chopped.
  
• ¹/₂ cup sweet, yellow, or white onion. Diced.
  
• 1 bunch whichever green is looking the saddest in the bin or the equivalent of 3 cups chopped. Mustard greens are perfect. The spiciness is a great addition. Escarole is my other favorite.
  
• 1 cup carrots, peeled and diced.
  
• 3 yukon gold potatoes, washed and diced.
  
• 1 cup crimini mushrooms, chopped
  
• 1 cup dark beer
  
• 1 ¹/₂ tablespoons garlic, minced
  
• 1 tablespoon stoneground mustard
  
• 1 tablespoon fresh dill, chopped
  
• 1 teaspoon salt. Adjust based on saltiness of stock.
  
• 20 grinds fresh pepper or
  
• 1 ¹/₂ teaspoons ground pepper, but come on, you subscribe to goop, get a grinder.
  
• 2 tablespoons butter or olive oil
  
• 2 quarts chicken stock.
  
• 2 tablespoons fresh lemon juice (optional)
  
• 1 pound bratwurst, uncooked