Let's Cook

1. Step 1.

   Whisk broth and miso together in slow cooker.

2. Step 2.

   Add mushrooms, scallion whites, garlic, and ginger.

3. Step 3.

   Sprinkle pork with pepper and transfer to slow cooker.

4. Step 4.

   Cover and cook until pork is tender and registers 195 degrees, 4 to 6 hours on high or 8 to 10 hours on low.

5. Step 5.

   Transfer pork to cutting board and let rest for 20 minutes.

6. Step 6.

   Meanwhile, add kombu, if using, to broth mixture in slow cooker and cook, covered, on high for 10 minutes.

7. Step 7.

   Using slotted spoon, remove and discard scallion whites, garlic, ginger, and kombu, leaving mushrooms in slow cooker.

8. Step 8.

   Bring 4 quarts water to boil in large Dutch oven.

9. Step 9.

   Add noodles and cook until tender but still chewy.

10. Step 10.

    Drain noodles and divide evenly among serving bowls.

11. Step 11.

    Slice pork in half lengthwise, then slice crosswise ¼ inch thick.

12. Step 12.

    Ladle broth into bowls.

13. Step 13.

    Serve ramen topped with 3 or 4 slices of pork and scallion greens.