[flapjack]

Any skunk beer: Corona, bottled Heineken.....(mentioned above many times)

Any beer that's improperly served at a bar. Through dirty lines, old beer, poor temps......

We attempted to brew a German Pilsner, one of our first club homebrews, the result was some sort of toxic beverage that tasted like formaldehyde. Because of that we now over-sanitize everything. 

[rabid_dingo]

The brewery closest to me was a nice local Micro with a very nice selection of other micro on tap. The owner/brewer
had the right idea to sell his and other micro toghether. Quite the hang out. But then I noticed his beers begining to
taste infected and rancid. I come to find out later that he had quite the coke habit...Sadly the beer is not the only thing to suffer. The brewery itself became a hangout for the "wrong" crowd. That beer was my worst.

[4himarks]

There was some Cherry juice added beer from Smuttynose that was just awful. I think it had some sort of Japanese-sounding name.

+1 on the pumpkin beers, although Dogfish Head makes one that's almost drinkable.

Don't get me started on sour beers. I've had sweetened vinegars that taste better.

[Mark G]

I remember back in college finding a beer called "Brewski" at the grocery store for 3.99 a case. Tasted like the cans were made out of cast iron. Sadly we kept going back until they ran out of stock. These were the days when we thought buying a 40 of Mickeys was splurging on the good stuff.

[majorvices]

Kinda surprised I haven't seen mentioned SA Cranberry Lambic or Cherry Wheat.

[dbeechum]

Kinda surprised I haven't seen mentioned SA Cranberry Lambic or Cherry Wheat.

Mostly cause neither of those hold a candle to the true worst: Dixie White Chocolate Mousse.

[babalu87]

Kinda surprised I haven't seen mentioned SA Cranberry Lambic or Cherry Wheat.

Could be because the Lambic is SO GOOD in a salad dressing

[weithman5]

okay i will say it.  i had a SA cranberry lambic that was terrible, as was a SA imperial white.  just not as bad as the south pacific San Miguel laced with formaldehyde.

[Pawtucket Patriot]

For me, the cheap yellow swill that most people have covered above was bad, but not memorably bad.  Memorably bad would have to go to Brau Brothers Scotch Ale.  I hate to rag on a local brewery, but these guys must use about 50% peat smoked malt in that beer, rendering it completely undrinkable, IMO.  I couldn't even finish the tasting sample I was given at a beer festival last summer.  I tried to give a smile to the rep who poured my sample after I took swig, but it was difficult to hide the fact that it was just awful.  

[tschmidlin]

For me, the cheap yellow swill that most people have covered above was bad, but not memorably bad.  Memorably bad would have to go to Brau Brothers Scotch Ale.  I hate to rag on a local brewery, but these guys must use about 50% peat smoked malt in that beer, rendering it completely undrinkable, IMO.  I couldn't even finish the tasting sample I was given at a beer festival last summer.  I tried to give a smile to the rep who poured my sample after I took swig, but it was difficult to hide the fact that it was just awful.  

I haven't had that beer, but I think peated malt should be either banned altogether or limited to no more than 1 grain per 5 gallon batch.  Unless you are making whisky.     All right, maybe not, but so many people REALLY overdo it.  I think more than 1% of the total grist is pushing it in a lot of beers.

[nicneufeld]

Peated malt in beer is such a wrong-headed thing...I like scotch whisky in some beers, I like smoke (rauchmalt, or woodsmoke) in beers, but by Jove I hate peated malt in any beer.  And yes, as a beginner I brewed a 80 shilling and wee heavy with much too much peated malt, foolishly.

Go to Scotland, drink their ales....they don't use peated malt for beer.  Only for whisky!

[Malticulous]

SA Cherry Wheat and Tractor Brewing Double Plow Stout.

[andrew]

Kinda surprised I haven't seen mentioned SA Cranberry Lambic or Cherry Wheat.

Mostly cause neither of those hold a candle to the true worst: Dixie White Chocolate Mousse.

mmm... white cake batter with some beer flavor