Celestial Brew is designed in such a way that it benefits the player for holding onto it, Since it gets better as you purify your stagger.
This means you occasionally hold onto Celestial brew until the right moment, where it will mitigate the most damage and get the most bonus
BUT, Since it’s such a short cooldown already and reduced by every keg smash, it feels like a huge waste to hold onto it and burn its potential cooldown.
PLEASE Give Celestial Brew two charges, it would keep the rewarding feeling of mitigating huge damage with Celestial brew, but remove the bad feeling of wasting Keg Smash Cooldown reduction.