The condiment leader debuts a limited-edition Leftover Gravy bottle, inspired by millennial nostalgia and Thanksgiving rituals. Each year after Thanksgiving, people flock to TikTok to show off the elaborate sandwiches they build out of their holiday meal leftovers. The ritual, going strong for at least four years now, is often paired with a viral audio clip from the quintessential ’90s sitcom Friends describing the perfect sandwich made out of holiday leftovers. The sandwich, starring an extra slice of gravy-soaked bread in the middle, is known as “the moist maker.”