Set oven to 400 degrees. Cut the top quarter of the head of garlic off, exposing the cloves inside. Be sure all cloves have the tops cut off of them.
Place the garlic head, exposed side up, onto a sheet of aluminum foil. Fold the foil up towards the top of the garlic, so it creates a shell around the garlic. Drizzle the exposed cloves with olive oil, then sprinkle with a pinch of salt and pepper.
Gently twist the foil to seal it shut over the garlic, then roast for 40 minutes. The garlic will be golden and tender, and the cloves will easily slide out of the bulb.
Remove all roasted garlic cloves, then mash with a fork until macerated. Add mayonnaise, lemon juice, worcestershire, hot sauce, and additional black pepper. Mix thoroughly, then refrigerate for at least an hour.
Spread on sandwiches, use as dip, or as desired! This will keep for at least a week in the refrigerator.