Chinese Steamed Buns with Goat Filling

Ingredients

• 1/4 cup warm water
• 1 tsp active dry yeast 
• 1 tbsp sugar
• 1/2 cup warm water
• 4 tbsp. sugar
• 2 cups flour
• 1 cup corn starch
• 2 1/2 tsp. baking powder
• 1/4 cup vegetable oil
• 1 pound ground goat 
• 1 tbsp. vegetable oil 
• 1 tsp. salt 
• ½ large onion, finely diced 
• ¾ tsp. Chinese 5 spice blend 
• 1 tbsp. rice vinegar 
• 2 tbsp. soy sauce or tamari
• 2 tbsp. oyster sauce 
• 1 tbsp. brown sugar 
• 3 cloves garlic, minced 
• ¼ tsp. Black pepper 
• ¼ tsp. fennel seed, whole 
• 1 cup minced cilantro 
• sliced cucumber
• quick pickled carrots
• lettuce
• spicy mayo