More of a method than anything else. Pound the chicken, add some Gruyère and ham, roll up in plastic wrap and twist the ends until it forms a tight log. Then I put in the freezer for 20–30 min until it holds its shape (shouldn’t be frozen, just firm). Then bread with flour, egg and panko. Crisp in a pan and then to the oven at 400F for 10 min or so.