Udon noodles with spicy sweet ground pork & cabbage sauce

Ingredients

• 3 teaspoons tahini (or Chinese sesame paste)
• 3 teaspoons dark sesame oil
• 3 teaspoons white miso
• 3 teaspoons rice vinegar
• Sambal Oelek or chili garlic sauce to taste (1/2 - 4 teaspoons )
• 2-4 teaspoons light brown sugar, to taste (start with lesser and taste at end)
• 1 teaspoons vegetable oil
• 4 garlic cloves, minced
• 1 teaspoons minced ginger
• 2 large shallots, thinly sliced
• 8 ounces ground pork
• 1/2 - 1 small head of napa cabbage, thinly shredded
• 2 cups chicken stock, preferably un-salted homemade
• 2 Tteaspoons Chinese light soy sauce
• 10-12 ounces dried udon noodles (or 1 libra fresh), cooked according to package directions
• 1/3 cup roasted, UN-salted peanuts, chopped
• 1 cup chopped cilantro
• 2 scallions, thinly sliced