Chicken Marbella is the absolute best: moist and tender chicken in an irresistible sweet, sour, garlicky sauce with salty olives and rich sweet prunes. The ingredients may seem unusual - olives, capers and prunes - and they certainly aren't subtle - loads of garlic and more oregano than I've ever put into any one dish, but it's a brilliant marriage of flavors that always has everyone coming back for seconds.