[Jeffinn]

So does everyone do this all the time or do you only do it for certain beers?

[Bklmt2000]

I do a vorlauf for every batch; no reason not to do one, in my opinion.

[Stevie]

Vorlaufing is the initial recirculation at the start of lautering. It allows for the Brewer to catch any grain that was loose before the grain bed formed a filter. I do it every beer.

I guess with some constant recirc (herms or rims) it may not be needed, but with other systems it is for sure needed.

[Wort-H.O.G.]

yup every brew...easy, effective.

[HoosierBrew]

Every batch, every time.

[tesgüino]

But have you done a blind triangle test? 

[denny]

So does everyone do this all the time or do you only do it for certain beers?

Every time on every run off.

[stpug]

When I batch sparge, I do.

Not when I BIAB

[erockrph]

Nope. Technically I could, since I do a pseudo-BIAB in a cooler, but I've never bothered to play around with that variable.

[PORTERHAUS]

All the time, although I find with different systems more or less may be needed. Like today with my new round cooler mashtun and false bottom from Northern Brewer, I didn't need to run much off before it was perfectly clear. Other times, it have have taken a couple qts.

[rgonzalez_me]

Every single time here!


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[ynotbrusum]

Virtually every time - but I wonder why, frankly.  My initial runnings get pretty clear and I pour through a double mesh strainer to strain out grain, anyway....force of habit, I guess.

[hopfenundmalz]

Every time. Except when I run run a little in the kettle and say, "Crap, the Vorlauf!".

You do this to keep grain out of the boil.

[klickitat jim]

I quit vorlaufing once I bought a pump for recirculation. I found that unhooking the pump lines, finding my two quart pitcher, vorlaufing a gallon or two of already crystal clear wort, then hooking back up my pump... just way too much work.

[majorvices]

As long as the wort is clear there's no need to vorlauf. When batch sparging this is usually a couple quarts recirced back in. On my commercial fly sparge system I volauf for about 30 minutes, or until the wort in the grant is very clear and grain free.