1. Beat the chicken
breasts with a rolling pin to slightly flatten them. Season with salt
and pepper, smear the underside with mustard then a slice of cheese.
Roll the breasts up tightly, with the cheese innermost, wrap with a
rasher of bacon and secure with string. Lightly coat with flour.
2. Heat the butter and oil in a large pan or casserole,
add the rolled up chicken and brown on all sides.
3. Gradually add the beer, making sure it doesn't come
to more than half way up the pan. Cover and simmer for 10 minutes.
4. Meanwhile, blanch the olives in boiling water. Drain
then add to the chicken. Continue to simmer, covered, for a further 15
minutes.
5. To serve - remove the string and serve hot with the
juices.