Wash the duck breasts and pat them dry.
Make a few cuts on the skin using a sharp knife. Be careful to not let the blade touch the meat.
Rub the breasts with salt.
Heat a large pan to medium high and sear the breasts for 1-2 minutes on each sides.
Preheat the oven to 190C. Line a baking tray with wax paper and place the duck breasts skin side up.
Roast for 12-14 minutes in the middle of the oven, until the breasts are slightly pink inside.
Let rest for a few minutes, then cut into about 7mm thick slices.
Thoroughly wash the mushrooms under running water.
Heat 1 tbsp of cooking oil and 1 tsp of butter in a medium pan and fry the mushrooms for about 5 minutes, moving constantly. They should turn golden and crispy, yet remain tender inside. Transfer to a plate and let cool.
Heat another small pan to medium-high and roast walnuts for a few minutes until fragrant (optional).
Prepare the dressing by whisking together 1 tbsp tkemali sauce, 2 tbsp olive oil, 1 tsp white vinegar and 1 tsp honey. If the sauce is too thick, add 1 tbsp water. Taste and adjust for sweetness.
Place the greens into a large bowl and toss with 3/4 of the dressing.
Add the cherries, oyster mushrooms and duck slices and gently mix to combine.
Scatter over walnuts, drizzle over the remaining dressing and serve.