Potato Starch

[Snackson]

smelled like used ass

Distinct smell eh? Sorry for your loss. Was hoping this would be good.

[wtfdskin]

I got the same result from a sugar beet ferment. Did a small bucket intended to blend with peat smoked barley, just for mouth feel. Finished dry but smelled like ass. It got dumped.

[Oldvine Zin]

Time to forget about this and do a tried and true, off to the store to pick up some grain!

OVZ

[der wo]

Sad, that we didn't find out what went wrong.

[Oldvine Zin]

Sad, that we didn't find out what went wrong.

I think that the low starch to sugar conversion was a factor. I started that ferment at 5 brix 1.20SG, it just really didn't stand a chance.

OVZ

[Oldvine Zin]

I just tasted the one keeper jar (about 8 oz) - smooth, great mouth feel, but maybe not worth the 20 dollars to produce it.

OVZ

[der wo]

Sad, that we didn't find out what went wrong.

I think that the low starch to sugar conversion was a factor. I started that ferment at 5 brix 1.20SG, it just really didn't stand a chance.

My calculations say you should get a SG of 1.035 with 25lbs on 25gal. Your FG of 0.990 is too low for such a low SG. I don't think it's possible. A pure water-ethanol mixture with 0.990 would mean 7% abv. So if there is some sugar left (as always) perhaps 0.990 means 10%abv. But that's not possible with your grain bill... Honestly I think your hydrometer shows instead of 1.035 1.020 and instead of 1.005 0.990. It's 0.015 or 0.010 off.
And I wonder why one could fail with conversion using such fine milled stuff and liquid enzymes. I don't think you had such a bad conversion. But 25lbs + 25gal is not much starch of course and there was another problem perhaps while fermentation.

[Oldvine Zin]

Sorry Der Wo, I miss typed should of been 1.02 SG hence the bad conversion

OVZ

[der wo]

Either I didn't understand you or you not me.
I know that you measured a SG of 1.020. And a FG of 0.990. But those number don't match. 1.020 has not enough sugar to get 0.990 after fermentation. Did you once measured water with the hydrometer? Should measure 1.000. I think it shows 0.990 with pure water.

[Pikey]

Yes please do keep this thread going to it's conclusion.

Only time I fermented potatoes was to a published recipe, in a wine without starch conversion and it gave the biggest hangover headaches brew I ever made. "Fuesel oils" were the mutterings at the time and it would be great to hear how this one turns out. I never allowed a potato anywhere near anything I brewed since, so if they can be used properly I'd love to hear about it.

I don't know whether this is relevant, or whether anyone else has done anything good with potato starch ?

Sad to hear of your problems.