1. Cut the lemon in half.
2. Season the chicken fillet with salt and pepper.
3. Barbecue the chicken and half lemons on high heat for about 5-8 minutes on each side depending on the size of the chicken fillets.
4. Once the chicken is done, remove it and the lemons from the grill and cut the chicken into thin slices.
5. Once the chicken is done, remove it and the lemons from the grill and cut the chicken into thin slices.
6. Spread crisp lettuce and radicchio on a dish.
7. Add blackberries, slices of chicken and large crumbles of Castello Extra Mature Cheddar.
8. Drizzle with a little olive oil and season with salt and pepper.
9. Finish with a squeeze of the grilled lemon over the salad.