Preheat oven to 375 degrees F.
Open the leg of lamb and season the inside with half
the garlic, half the thyme leaves, 1 tablespoon olive
oil, salt, and pepper.
Tie the lamb closed with string.
Place it in a roasting pan, season with salt
and pepper, and brush it with olive oil.
In a bowl mix the beer, honey, remaining garlic and thyme, juniper
berries, and bay leaves.
Pour this over the lamb and put the roasting pan into oven.
Immediately turn the oven down to 325 degrees F.
Baste every 10 minutes.
Cook 12 to 13 minutes per pound for medium rare or
until internal temperature reaches 130 to 135 degrees
Remove the roast from the oven, cover it loosely
with foil and allow it to rest for about 10 minutes
Serve with pan drippings.