Second batch tastes too bitter.

[WesBrew]

My guess would be that the fermentation temp got too high snd it produced some harsh fusel alcohols, some can be harsh and solvent like. Wlp005 is a perfect yeast that shouldn’t ferment down to .009 unless it got too hot. Your bitterness in the recipe would be on the high end of the style but definitely not harsh

 

[Beermeister32]

Another thing to look at is your water supply.

For kit beers using DME or LME you should use bottled distilled or reverse osmosis water.

The DME and LME already have salts and minerals in them. If you use tap water, you are doubling up on salts and minerals, making a mineral-sharp tasting beer.

Also make sure to ferment on the low range of the yeast’s known temperature range. Cooler fermentation usually suppresses fusel alcohol and ester production in beers.