For the spelt salad with feta cheese, cover the spelt with water and leave to soak for about 8 hours or overnight.
The next day, cook the spelt at low temperature in a closed saucepan for about 25 minutes until soft.
Peel the cucumber, cut it in half lengthwise and slice it. Remove the stalk from the tomatoes and cut them into eighths. Clean the spring onions and cut into rings. Pit olives.
Mix cucumbers, tomatoes, spring onions and olives in a large bowl. Add corn and the cooked spelt grains.
For the dressing, mix the whey concentrate with the water and herb salt, then whisk in the oil. Mix the dressing with the salad ingredients.
Chop the feta cheese into cubes and place on top. Serve the spelt salad with feta cheese sprinkled with basil leaves and chopped parsley.