I had the opposite problem with a brew.
I didn't put quite enough hops into a porter to balance the malt, and it was a bit sweeter than I preferred. Since I prefer malt forward beers vs hoppy beers and like coffee, I brewed coffee with room temperature water and let it set for two days before adding to the bottling bucket. It tasted good at bottling.
I relearned two truisms: less is often more: and the only thing worse than one bottle you dislike the taste of, it's having 49 more bottles of the same.
Actually if you let it get to about 55 F, it does taste better.
Maybe I need to chill my sample from the fermenter to the temp I drink before testing the amount of anything I might consider adding to the batch.