wizurd1977
Active Member
- Joined
- Apr 5, 2020
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Evening all,
I was looking for some advice to avoid over sparging and getting astringency in the finished beer.
I've got a boiler with a large dead space. What i did last time around was to tip the boiler in order to get access to most of the wort except the trub at the bottom. The dead space is 6L.
I was thinking instead of having to tip the boiler i could increase the amount that i use when i sparge, perhaps add on another 6L so that i then end up with the dead space in the boiler being covered by this extra 6L.
But i'm worried that i'll be pushing too much water through on my batch sparge leading to astringency.
So i wondered what suggestions anyone might have. The numbers i'm looking at for the brew are as follows:
To give you an idea my next brew is using 5.8KG of grains at 2.75 L/Kg. So i'll be adding 16L of water for the mash. I'll lose say 5.2L to grain absorption plus 2.4L to the deadspace in the mash tun. Therefore should have around 8.4L of wort into the boiler. Looking at the recipe calcs i'll then need to add another 25L on the batch sparge if i want to add on for the boiler dead space. 25L from the batch sparge would end up in the boiler with the 8.4 giving total of 33.4L in the boiler. Take off 6L for deadspace gives 27.4, i tend to lose about 20% evaporation for a 60 min boil uncovered which then leaves 21.92. Take off 1L to trub at the bottom as well which gives me 20.92L and i wanted to end with 21L.
Sorry for all the numbers :-) Do you think i'll end up sparging too much with that 25L batch sparge or do these numbers sound about right to people?
I was looking for some advice to avoid over sparging and getting astringency in the finished beer.
I've got a boiler with a large dead space. What i did last time around was to tip the boiler in order to get access to most of the wort except the trub at the bottom. The dead space is 6L.
I was thinking instead of having to tip the boiler i could increase the amount that i use when i sparge, perhaps add on another 6L so that i then end up with the dead space in the boiler being covered by this extra 6L.
But i'm worried that i'll be pushing too much water through on my batch sparge leading to astringency.
So i wondered what suggestions anyone might have. The numbers i'm looking at for the brew are as follows:
To give you an idea my next brew is using 5.8KG of grains at 2.75 L/Kg. So i'll be adding 16L of water for the mash. I'll lose say 5.2L to grain absorption plus 2.4L to the deadspace in the mash tun. Therefore should have around 8.4L of wort into the boiler. Looking at the recipe calcs i'll then need to add another 25L on the batch sparge if i want to add on for the boiler dead space. 25L from the batch sparge would end up in the boiler with the 8.4 giving total of 33.4L in the boiler. Take off 6L for deadspace gives 27.4, i tend to lose about 20% evaporation for a 60 min boil uncovered which then leaves 21.92. Take off 1L to trub at the bottom as well which gives me 20.92L and i wanted to end with 21L.
Sorry for all the numbers :-) Do you think i'll end up sparging too much with that 25L batch sparge or do these numbers sound about right to people?
