Step 1
Heat water, red wine, cider vinegar, lemon, 1/2 onion, garlic, cloves, bay leaves, white sugar, salt, juniper berries, and peppercorns in a saucepan over medium heat until sugar is dissolved, about 5 minutes. Allow marinade to cool and pour into a resealable plastic bag. Add beef roast, coat with marinade, squeeze out excess air, and seal bag. Marinate in the refrigerator 2 to 3 days, turning the roast twice a day.