Restaurants Raise the Bar on Holiday Gifts

The holidays are a time for eating, drinking, and gifting—and at some restaurants, diners can do all three. From bottled cocktails and housemade bitters to farm-fresh honey and fresh takes on festive desserts, restaurants use on-hand products to bolster revenue during the busy season and endear themselves to guests by becoming a part of new traditions.

At Pammy’s in Cambridge, Mass., husband-wife team Chris and Pam Willis...