In Dark Souls 3 players can make their existing estus healing much more potent and even create additional flasks. This will provide more recovery when dealing with long dungeons and harder bosses. However, drinking estus mid-battle can be rather slow, making it a little dangerous if one gets too indulgent.
Dark Souls 3 includes two types of estus — the classic version that restores HP, and the newer ashen estus that instead recovers FP. The latter is a great option for heavy spell casters,
Read more on screenrant.com