01 - In a small bowl, dissolve the yeast and 1 tablespoon sugar in the lukewarm milk. Let stand for 5–10 minutes until foamy.
02 - In a large mixing bowl, combine flour, remaining sugar, salt, and lemon zest (if using).
03 - Add the yeast mixture, melted butter, eggs, and vanilla extract. Mix until a soft dough forms.
04 - Knead the dough on a lightly floured surface for 8–10 minutes, until smooth and elastic. If sticky, add flour 1 tbsp at a time.
05 - Place the dough in a greased bowl, cover, and let rise in a warm place until doubled, about 1–1.5 hours.
06 - Punch down the dough. Divide into three equal portions. Roll each into a 16-inch rope. Braid the ropes together and form into a ring or leave as a straight braid. Transfer to a parchment-lined baking sheet.
07 - Tuck the colored, uncooked eggs gently into the braid, spacing evenly (do not press deeply).
08 - Cover loosely and let rise for 30–45 minutes, until puffy.
09 - Preheat oven to 350°F.
10 - Brush the bread (avoiding the colored eggs) with egg wash. Sprinkle with colored sprinkles if desired.
11 - Bake 25 minutes, or until golden brown and cooked through. If browning too quickly, tent with foil.
12 - Cool on a wire rack before serving.