Set the barley to boil in lightly salted water. They need about 20 minutes, so they are tender but have a bite.
Cut the chicken into smaller pieces and brown them in a bit of butter in a pan, season with salt and pepper.
Cut the fennel into small pieces and the spring onions into thin slices, add to the pan, and sauté for 3-4 minutes.
Drain the barley and rinse with cold water, let them drip off.
Mix all the ingredients for the dressing well and toss with the barley.
Also add the chicken, fennel, and spring onions to the barley.
Cut the apple into small cubes and add to the barley along with the salad, and it is ready.