Steps
1. In a large pot, heat the duck fat over medium heat.
2. Put the diced duck and mussels into the pot and cook until lightly golden, approximately 2-3 minutes.
3. Stir in the mustard, diced tomatoes, and coffee beans.
4. Pour in the chicken broth and oregano and bring to a low boil.
5. Simmer for 8-10 minutes, until the mussels are cooked through.
6. Remove from heat and season with salt and pepper to taste.
7. Serve and enjoy!