Cheaters Ramen with Country Ham Parmesan and Egg

Name: Cheater's Ramen with Country Ham, Parmesan and Egg
Ingredients: 1 tablespoon unsalted butter; 3 ounces country ham, prosciutto or serrano ham, coarsely chopped; 1 small onion, chopped; 3 garlic cloves, crushed; One 1-inch piece of fresh ginger; 3 cups chicken stock or low-sodium broth; 2 teaspoons Asian fish sauce; 2 teaspoons red miso; 2 teaspoons soy sauce; 2 tablespoons white vinegar; 4 large eggs; 8 ounces dried instant ramen noodles; 8 thin slices of country ham, prosciutto or serrano ham (about 1/2 pound); 1/4 cup Parmigiano-Reggiano cheese shavings; 1 Hass avocado, thinly sliced; 2 scallions, thinly sliced; 2 sheets of nori, quartered