1. Cut the chicken breasts into pieces (not too small), put them in a shallow dish with the oil and soy sauce.
2. Heat a casserole dish on the stove, when it is hot, pour in the chicken breasts and sauté.
3. Stir constantly for 1 to 2 minutes, the meat should not stick and should be well seared to remain tender.
4. Remove the meat, add a little oil and sauté the minced onion, add a little flour and deglaze with 1/2 glass of white wine and the bowl of broth. Wait for the wine to evaporate. Reduce the heat to low.
5. Add the leeks cut in half lengthwise and in 2 cm pieces, cover for 5 minutes. The leeks should be slightly crunchy, extend the cooking time if you prefer them more tender.
6. Then pour the meat back into the sauté pan, in a few minutes the meat will heat up. It's ready!