For the Striezel, sift the flour into a bowl. Warm the milk slightly, add the stevia powder and dry yeast and mix well until the stevia powder and dry yeast have dissolved.
Then add the bitter almond oil and eggs and whisk well. Add the liquid and the softened butter and salt to the flour and knead vigorously. (Knead by hand for about 10 minutes).
Cover the dough and let it rise until doubled (about 1 h). Knead the risen dough again and divide it into 3 parts. Form the braid and place it on a baking sheet.
Brush the surface with a little egg and sprinkle with hail sugar. Leave to rise again in a warm place for 30 minutes. In the meantime, preheat the oven to 200 °C top/bottom heat.
Bake the braid for approx. 45 minutes at 180 °C top/bottom heat. Bake for less time if using hot air.