World's Best Pad Thai!

Ingredients

• 1/4 cup chicken stock
• vegetable oil for stir-frying, and wedges of lime
• 3 green onions, sliced
• 3 Tbsp. fish sauce
• 1-3 tsp. chili sauce, OR 1/2 tsp. or more dried crushed chili or cayenne, to taste
• Marinade for Chicken: 1 tsp. cornstarch dissolved in 3 Tbsp. soy sauce
• 1/3 cup crushed or roughly chopped peanuts (or other nuts, such as cashews)
• 3 cups fresh bean sprouts
• 1/2 cup fresh coriander/cilantro
• 1 to 1 1/2 cups chopped chicken breast or thigh
• 8 oz. Thai rice noodles (or enough for 2 people), linguini-width
• optional: 1-2 fresh red chilies, minced
• 3 Tbsp. brown sugar
• 3/4 Tbsp. tamarind paste dissolved in 1/4 cup warm water (look for tamarind at Asian/Chinese or Indian food stores)
• 4 cloves garlic, minced