The Estus Flask is the signature healing item from Dark Souls, developed by FromSoftware and first introduced in 2011. Its use sound became familiar through gameplay videos, challenge runs and boss fight clips shared across YouTube, Twitch and social media. The audio stuck because it represents a very specific feeling: relief under pressure, often with risk attached because healing leaves the player vulnerable. That clear meaning made it useful beyond the game itself, especially in memes about recovering from mistakes or barely surviving a chaotic moment.