If I’m in a rush, I’ll add a touch more flour mixed with water to avoid clumping. If the gravy is too thick, I’ve found that adding a splash ... or white button mushrooms in place of cremini ones if ...
To make the gravy, remove the tips of the legs, tail and wing tips from the chicken and put in a stock ... Stir in the plain flour, then add ladles of the stock, stirring all the time.
To this, you add one cut up chicken... to serve two people ... Whisk in the reserved 3 tablespoons of dredging flour and cook for 1 minute. Add the milk and broth, whisking constantly.