60min or 90 min mash

[brewzer]

Hi
sorry if this has been posted before
Just wanted to know what the difference is apart from the obvious time
ive noticed a few people do this and was going to give it a go and wandered if anybody had got anymore info about it
Thanks in advance

[awalker]

All my wheat beers are 90min mash
But other than that they are all ales at 60mins, eveything should have converted by then.

Add to that a 60min boil,instead of a 90min and you are finished a hour earlier, just have to use a few more hops.

[brewzer]

do you know roughly what percentage of hops to increase it by
cheers

[mysterio]

60 minute mash is more than enough for just about anything. Like walker, anything with some non-malt adjuncts I would probably raise to 90mins. Also you will tend to get a slightly more well attenuated beer with a 90 min mash, but it's barely noticeable.

[pas8280]

To be honest i have tried both and found no difference in the end result but i find 90 mins mash and 90 mins boil a far more relaxed brew day with time for a bacon buttie during the mash

[Wolfdog]

Hi
sorry if this has been posted before
Just wanted to know what the difference is apart from the obvious time
ive noticed a few people do this and was going to give it a go and wandered if anybody had got anymore info about it
Thanks in advance

This is a very valid question, I was woundering this myself. I have a Dave Line book and have taken this a gospel, but it is interesting to know you can save time and money by knocking off 1 hour total, especially the saving on the 30min boil!

[awalker]

do you know roughly what percentage of hops to increase it by
cheers

Must admit not sure with out looking at Beersmith and thats on the PC in the brewery (ok then the garage)
Its not much though

[brewzer]

Cheers everyone going to give it a go Thursday let you know how it goes
i will have a play with the hops

[rick_huggins]

I'm sure I read it takes at least 60mins to get the AAs from the hops..therefore a 90min boil was req'd

[Brotherton Lad]

I think some are confusing the mash with the boil.

[Horatio]

Using Beer Engine to do the maths; if I boil for 90 minutes I get 26 IBU's but if I go down to 60 minutes I get 24.2 IBUs with one of my recipes. Hardly any difference really. The gap may be bigger with a really large hop bill but it doesn't seem that much to me.

[kay-jay]

hi,

i read somewhere that the hot break occurs 60-90 mins into the boil, therefore a 90min boil is preferred to ensure the maximum hot break.(think it was on the home brew forum!) no idea if its correct tho

KJ

[rick_huggins]

I think some are confusing the mash with the boil.

I think you may be right

[Stonechat]

All my wheat beers are 90min mash
But other than that they are all ales at 60mins, eveything should have converted by then.

Add to that a 60min boil,instead of a 90min and you are finished a hour earlier, just have to use a few more hops.

This was discussed at a CBA meeting in Colchester, with two retired head-brewers from respected breweries present. I'm sure the outcome was that if a 60 minute mash works for you, then do it. The same for the boil. In fact I'm sure someone said that some beers only need less than an hour's boil.

On the brew days when I do two batches of 25 litres that's 2 hours saved.

[WishboneBrewery]

Mostly I do 90mins, done a couple of 60mins with no detrimental effects to the finished beer Though I'll be sticking to 90's