Low FODMAP Hot Cross Buns - FODMAP Everyday

Ingredients

• 1 cup (144 g) Currants
• ½ cup (120 ml) Warm water
• 2 cups (260 g) Cornstarch
• ½ cup (65 g) Tapioca starch
• ½ cup (75 g) Brown rice flour
• ¼ cup (35 g) Millet flour
• 2 tablespoons White sugar
• 1 tablespoon Instant yeast
• 1 tablespoon Xanthan gum
• 1½ teaspoon Kosher salt
• 1 teaspoon Ground cardamom
• 1 ¼ cups (300 ml) lactose-free Whole milk, (at room temperature)
• 3 large eggs, (at room temperature)
• 2 teaspoons Vanilla extract
• 1 tablespoon Orange zest (from 1 orange)
• 1 cup (2 sticks; 226 g) unsalted butter, (soft, cut into cubes )
• 1 large egg yolk, (for egg wash before baking)
• 1 cup (90 g) Powdered sugar
• ¼ cup (60 ml) freshly squeezed orange juice, (from 1 orange)