Chuck Roast With Heavenly Horseradish Cream Recipe

2 tablespoons cider vinegar

1 teaspoon salt

1 teaspoon freshly ground black pepper

1 teaspoon minced garlic

1 tablespoon finely chopped white onion

1/2 teaspoon dried thyme crushed

1/4 cup chopped fresh parsley

3-1/2 pound chuck roast

Cream:

1/2 cup sour cream

1/2 cup mayonnaise

1/4 teaspoon salt

1/4 teaspoon freshly ground black pepper

1 tablespoon prepared horseradish

1 teaspoon fresh lemon juice

1 teaspoon spicy mustard

1/4 cup fresh parsley