Sweet Potato Challah

Bahan-bahan (20 porsi)

• Two .25-ounce envelopes active dry yeast
• 4 tablespoons granulated white sugar, (divided)
• ½ cup warm water
• 3 tablespoons unsalted butter, (melted)
• 1 teaspoon salt
• 3 large eggs, (divided)
• 3 to 3½ cups all purpose flour
• ½ cup mashed sweet potatoes or yams
• One 1-inch piece fresh ginger, (grated)