Christmas is a special holiday and for a special holiday, you deserve a special meal; splurge a little and grill a London broil. London Broil is a more affordable alternative to Prime Rib and takes a shorter amount of time to grill. However, for a London Broil, which is a lean cut of beef, a good marinade is imperative. Marinades impart wonderful flavor and texture to grilled foods. When preparing a London Broil, allow 3/4 lb. per person. London Broil will cook down and this generous estimate accounts for that. WHAT IS A MARINADE A marinade is a flavorful, wet seasoning, in which food is soaked before it is smoked…