Bottled the single hop "Nelson", moving closer to the £1.50 per pint line (including all equipment and ingredients).
Sunday, October 28, 2012
Nelson Bottled
Bottled the single hop "Nelson", moving closer to the £1.50 per pint line (including all equipment and ingredients).
Saturday, October 27, 2012
Nelson ready for bottling
The Nelson single hop has come on quite well, given it was stab in the dark with the bitterness it isn't too bad.... probably could have more bitterness but time will tell when it's in the bottle.
The cooler mash has resulted in a perfect Final Gravity.
Next brew planned is a remake of Pure Green Goose using crystal rather than caramalt to try pin-point if the slow conditioning problem seen with AG9 and AG12
The cooler mash has resulted in a perfect Final Gravity.
Next brew planned is a remake of Pure Green Goose using crystal rather than caramalt to try pin-point if the slow conditioning problem seen with AG9 and AG12
Saturday, October 20, 2012
Brew day over
26.5 Litres of a new brew in the fermentation cupboard.
A big update to the process towards trying to get bigger batch sizes, and also a bit of an experiment in trying to get best utilisation after listening to Glen Tinseth and John Palmer discussing that hop utilisation isn't linked to gravity but the proteins in the wort.
The boilers comfortably hold 26 litres without risking boilerover, the fermentaiton bin has 28 litres this time (1.5 litre dead space). I think going to 29 litres may be ok in the fermentation bin which would give a maximum batch size of 27.5 litres.
Tasting this brew during the boil seemed to be quite bitter so cut the hops back and added a few more finishing hops. The big flaw in the process was trying to boil (12 + 14 in the primary boil) and 14 litres (secondary boil)- but the left over wort cooled to 50deg between the sparge and draining one of the boilers. The time to get back to boiling with the hops left in the boiler wasn't insignificant.
Proposal for the next process:
T0:
T15: - as soon as the first 12 litres of wort is sparged begin boiling for 45 minutes - no hops (A)
T~30: begin boiling
- carry on sparging and collect next 14 litres of boiler
- carry on sparging and collect 12 litres of wort.
T~60: add pipes/immersion chiller for sterilisation
T~75: begin draining wort from (A) into fermentation bin and cool to 37deg
T~90: begin boiling 14L wort with medium gravity and hops (B) and 12L with low gravity (C)
T~165: drain into fermentation bin and cool.
-
A big update to the process towards trying to get bigger batch sizes, and also a bit of an experiment in trying to get best utilisation after listening to Glen Tinseth and John Palmer discussing that hop utilisation isn't linked to gravity but the proteins in the wort.
The boilers comfortably hold 26 litres without risking boilerover, the fermentaiton bin has 28 litres this time (1.5 litre dead space). I think going to 29 litres may be ok in the fermentation bin which would give a maximum batch size of 27.5 litres.
Tasting this brew during the boil seemed to be quite bitter so cut the hops back and added a few more finishing hops. The big flaw in the process was trying to boil (12 + 14 in the primary boil) and 14 litres (secondary boil)- but the left over wort cooled to 50deg between the sparge and draining one of the boilers. The time to get back to boiling with the hops left in the boiler wasn't insignificant.
Proposal for the next process:
T0:
T15: - as soon as the first 12 litres of wort is sparged begin boiling for 45 minutes - no hops (A)
T~30: begin boiling
- carry on sparging and collect next 14 litres of boiler
- carry on sparging and collect 12 litres of wort.
T~60: add pipes/immersion chiller for sterilisation
T~75: begin draining wort from (A) into fermentation bin and cool to 37deg
T~90: begin boiling 14L wort with medium gravity and hops (B) and 12L with low gravity (C)
T~165: drain into fermentation bin and cool.
-
Tuesday, October 9, 2012
Nelson Recipe
Planned recipe, hoping the accuracy of the calculations can be refined throughout this brewday.
Back to pen and paper rather than using the tablet.
process : Calculating with Process 19AG16i17 process : brewerslabEngine rev 2012-10-09 process : changes since 2011-09-14 process : - conversion to use Gql datastore rather than pickle process : - removed ingredients against activities never used so far process : - found potential bug with checkStockAndPrice and kegs process : - now using implicit caprequired/co2required process : changes since 2011-04-15 process : - waterRequirement changes to better include FV deadspace process : - waterRequirement ignore hop wastage if boilder deadspace is greater process : key assumptions process : - hops not scaled based on topup assumed marginal process : ( need some calculation for this as big assumption) boilWaste: Adding 1.25 for wastage in the boiler boilWaste: Adding 1.25 for wastage in the boiler boilWaste: batch size adjusted to 28.50 to account for wastage in boiler boilWaste: batch size adjusted to 30.0 to account for wastage in fermentation bint calcferm : Calculating expected gravity calcferm : fermentable: 340.0gm Honey calcferm : hwe: 291.84 extract: 76.0 calcferm : contribution = 3.30678589353 calcferm : 3.30678589353 = 0.34 * 291.84 / 30.00666 calcferm : fermentable: 200.0gm Torrified Wheat calcferm : hwe: 299.52 extract: 78.0 calcferm : contribution = 1.99635680879 calcferm : 1.99635680879 = 0.2 * 299.52 / 30.00666 calcferm : Including in Mash Gravity calcferm : fermentable: 5000.0gm Tipple calcferm : hwe: 315.648 extract: 82.2 calcferm : contribution = 52.5963236162 calcferm : 52.5963236162 = 5.0 * 315.648 / 30.00666 calcferm : Including in Mash Gravity calcferm : uncorrected gravity for grain 1.055 calcferm : correcting gravity based on mash efficiency of 71.0 % calcferm : estimated_gravity_mashedgrain = 38.7608031017 calcferm : 38.761 = 57.899 * 0.71 calcferm : 1.039 = 1 + (38.761/1000) calcferm : estimated_gravity_nonmashedgrain = 3.30678589353 calcferm : estimated_gravity = 38.761 + 3.307calchops : Calculating Tinseth Hop Calculation calchops : http://www.realbeer.com/hops/research.html calchops : setting volume for hops calculations to 38.01 (was 30.01) result : hop_utilisation = 0.0000 for 1.0421 @ 0.001 m tinseth : 0.0000 = 1.1306 * 0.0000 tinseth : bigness_factor = 1.1306 tinseth : 1.1306 = 1.65 * 0.000125 ^ ( 1 + estimated_gravity / 1000 ) tinseth : 1.1306 = 1.65 * 0.000125 ^ (1.0421 - 1 ) tinseth : 1.1306 = 1.65 * 0.6852 tinseth : boil_time_factor = 0.0000 tinseth : 0.0000 = ( 1 - e ^ (-0.04 * hop_boil_time) ) / 415 tinseth : 0.0000 = ( 1 - e ^ (-0.04 * 0.001) ) / 415 tinseth : 0.0000 = ( 1 - e ^ (-4e-05) ) / 415 tinseth : 0.0000 = ( 1 - 0.9999600008 ) / 415 tinseth : 0.0000 = ( 3.99992000106e-05 ) / 415 result : hop_utilisation = 0.0025 for 1.0421 @ 60.0 m tinseth : 0.0025 = 1.1306 * 0.0022 tinseth : bigness_factor = 1.1306 tinseth : 1.1306 = 1.65 * 0.000125 ^ ( 1 + estimated_gravity / 1000 ) tinseth : 1.1306 = 1.65 * 0.000125 ^ (1.0421 - 1 ) tinseth : 1.1306 = 1.65 * 0.6852 tinseth : boil_time_factor = 0.0022 tinseth : 0.0022 = ( 1 - e ^ (-0.04 * hop_boil_time) ) / 415 tinseth : 0.0022 = ( 1 - e ^ (-0.04 * 60.0) ) / 415 tinseth : 0.0022 = ( 1 - e ^ (-2.4) ) / 415 tinseth : 0.0022 = ( 1 - 0.0907179532894 ) / 415 tinseth : 0.0022 = ( 0.909282046711 ) / 415 result : hop_utilisation = 0.0012 for 1.0421 @ 15.0 m tinseth : 0.0012 = 1.1306 * 0.0011 tinseth : bigness_factor = 1.1306 tinseth : 1.1306 = 1.65 * 0.000125 ^ ( 1 + estimated_gravity / 1000 ) tinseth : 1.1306 = 1.65 * 0.000125 ^ (1.0421 - 1 ) tinseth : 1.1306 = 1.65 * 0.6852 tinseth : boil_time_factor = 0.0011 tinseth : 0.0011 = ( 1 - e ^ (-0.04 * hop_boil_time) ) / 415 tinseth : 0.0011 = ( 1 - e ^ (-0.04 * 15.0) ) / 415 tinseth : 0.0011 = ( 1 - e ^ (-0.6) ) / 415 tinseth : 0.0011 = ( 1 - 0.548811636094 ) / 415 tinseth : 0.0011 = ( 0.451188363906 ) / 415 calchopsW: 0.00 IBU = 15.0gm Nelson Sauvin @ 0.001 minutes calchopsW: this_hop_ibu = 0.001 calchopsW: 0.001 = hop_utilisation_factor * (hop_alpha * qty * 1000) / batch_size calchopsW: 0.001 = 0.00000011 * (12.25 * 15.0 * 1000) / 38.00666 calchopsW: 19.96 IBU = 25.0gm Nelson Sauvin @ 60.0 minutes calchopsW: this_hop_ibu = 19.960 calchopsW: 19.960 = hop_utilisation_factor * (hop_alpha * qty * 1000) / batch_size calchopsW: 19.960 = 0.00247708 * (12.25 * 25.0 * 1000) / 38.00666 calchopsW: 5.94 IBU = 15.0gm Nelson Sauvin @ 15.0 minutes calchopsW: this_hop_ibu = 5.942 calchopsW: 5.942 = hop_utilisation_factor * (hop_alpha * qty * 1000) / batch_size calchopsW: 5.942 = 0.00122914 * (12.25 * 15.0 * 1000) / 38.00666 calchops : 25.90 IBU = Estimated Total IBUs calchops : not taking account of additional hops required for top-up dilutions calchops : hops calculated on batch size of 38.01 calcColor: Calculating Morey SRM Colours calcColor: http://www.brewingtechniques.com/brewingtechniques/beerslaw/morey.html calcColor: color_srm = 1.016 for Torrified Wheat calcColor: 1.016 = 2.0 EBC * 0.8368 calcColor: weighted_grain_color = 0.45 calcColor: 0.45 = (qty / 1000 / 0.454) * color_srm calcColor: 0.45 = (200.0 / 1000 / 0.454) * 1.0 calcColor: 0.45 = (0.440528634361) * 1.0 calcColor: color_srm = 3.00228 for Tipple calcColor: 3.00228 = 5.9 EBC * 0.8368 calcColor: weighted_grain_color = 33.06 calcColor: 33.06 = (qty / 1000 / 0.454) * color_srm calcColor: 33.06 = (5000.0 / 1000 / 0.454) * 3.0 calcColor: 33.06 = (11.013215859) * 3.0 calcColor: total_weighted_color = 33.51 calcColor: 33.51 = sum(weighted_color) calcColor: estimated srm = 3.4 calcColor: 3.4 = 1.4922 * mcu ^ 0.6859 calcColor: 3.4 = 1.4922 * 3.337 ^ 0.6859 calcColor: mcu = 3.337 calcColor: 3.337 = weighted_grain_color / volume_gallons calcColor: 3.337 = 33.512 / 10.041 calcColor: volume_gallons = 10.041 calcColor: 10.041 = (batch_size + top_up) / 3.785 calcColor: 10.041 = (30.007 + 8.000) / 3.785 result : estimated ebc = 6.7 calcColor: 6.719 = 3.4 SRM * 1.97 calcfgrav: Calculating Estimated Final Gravity calcfgrav: estimated_final_gravity = 1.0088 calcfgrav: 1.0088 = 1 + (estimated_gravity - (1.23 * (fermentable_grain + fermentable_nongrain ))/1000 calcfgrav: 8.7801 = 42.0675889952 - (1.23 * (24.48 + 2.58 ) calcfgrav: fermentable_grain = 24.48 calcfgrav: 24.48 = (estimated_gravity * grain_pcnt * grain_fermentable_typical_pnct) calcfgrav: 24.48 = (42.07 * 0.94 * 0.62) calcfgrav: fermentable_nongrain = 2.58 calcfgrav: 24.48 = (estimated_gravity * nongrain_pcnt * nongrain_fermentable_typical_pnct) calcfgrav: 2.58 = (42.07 * 0.06 * 1.00) calcfgrav: estimated_yeast_attenuation = 11.3582 calcfgrav: yeast attenuation for Safale S04 0.7 calcfgrav: 11.3582 = estimated_gravity * (1 - yeast_atten) calcfgrav: 11.3582 = 42.0676 * (1 - 0.7) calcfgrav: Yeast Attenuation used for final gravity estimate result : Final Gravity Estimate = 1.011 calcabv : Alcohol By Volume result : abv = 4.02 % calcabv : 4.02 % = ( original_gravity - final_gravity ) * 131 calcabv : 4.02 % = ( 1.0421 - 1.0114 ) * 131 striketmp: Calculating Strike Temperature striketmp: http://www.howtobrew.com/section3/chapter16-3.html striketmp: strike_temp = 82.5C striketmp: 82.5C = ( ( .41 / mash_grain_ratio ) * (target_mash_temp - initial_grain_temp) ) + target_mash_temp striketmp: 82.5C = ( ( .41 / 1.50 ) * (70.0C - 17.0C) ) + 68.0C waterreqd: Calculating Water Requirement waterreqd: Batch Size Requried = 26 L waterreqd: Batch Size Requried (plus wastage)= 30.00666 L waterreqd: TopUp Volum of 8.00 --> 22.01 L waterreqd: fermentable: 200.0gm Torrified Wheat waterreqd: fermentable: 5000.0gm Tipple waterreqd: Grain Weight = 5200.0gm --> 5.2 L water waterreqd: hop: 15.0gm Nelson Sauvin waterreqd: hop: 15.0gm Nelson Sauvin waterreqd: hop: 25.0gm Nelson Sauvin waterreqd: Ingoring hop weight and using just boiler deadspace waterreqd: Mash/Lauter Tun Deadspace = 2.25 --> 2.25 L water waterreqd: Hot Liquor Tank Deadspace = 3.5 --> 3.5 L water waterreqd: Fermentation Bin Deadspace--> 1.50666 L water waterreqd: Cooling Loss (4.0 %) --> 0.9405328 L water waterreqd: Boiling Loss (15.0 %) --> 3.44207892 L water waterreqd: Total Additional Water Required 16.8 L (in boil 26.4 L) waterreqd: Total Water Required 38.8 L waterreqd: post boil volume in boilers 19.90 waterreqd: not counting any hops as boiler deadspace higher waterreqd: post boil volume in fv/precooling 19.90 waterreqd: post boil volume in fv/cooled 18.96 waterreqd: available out of fv 17.45 waterreqd: InFV = batchSize + FV_Deadspace waterreqd: 27.51 = 26.00 + 1.5067 mashliqid: Mash Liquid required, based on mashliqid: http://www.brew365.com/technique_calculating_mash_water_volume.php mashliqid: fermentable: 200.0gm Torrified Wheat mashliqid: fermentable: 5000.0gm Tipple mashliqid: grain_thickness_ratio 1.500 result : mash_liquid = 16.3 mashliqid: 16.3 = ( grain_thickness_ratio * total_grain_weight ) / (4 * metric_lb_kg ) * metric_gal_l mashliqid: 16.3 = ( 1.500 * 5.20 ) / (4 * 0.4536 ) * 3.7854 mashliqid: 16.3 = ( 7.8000 ) / ( 1.8144 ) * 3.7854 mashliqid: 16.3 = 4.2990 * 3.7854 mashgravi: Calculating Mash Gravity (Post Mash/Pre Boil/Pre Evaporation Concentration) mashgravi: Boil Volume: 26.39 mashgravi: Gravity Expected from Grain: 1.0388 mashgravi: Volume after boil/cooling: 22.01 mashgravi: 1.032 = (1-(estimated_gravity_grain * 1000) * batch_size_with_wastage) / boil_volume mashgravi: 32.32 = (39 * 22.01) / 26.39 mashgravi: Pre Boil Gravity (Pre Boil/Pre Evaporation Concentration) mashgravi: Boil Volume: 26.39 mashgravi: Gravity Expected: 1.0421 mashgravi: Volume after boil/cooling: 22.01 mashgravi: 1.032 = (1-(estimated_gravity * 1000) * batch_size_with_wastage) / boil_volume mashgravi: 35.08 = (42 * 22.01) / 26.39 topupVolu: Have a topup volume of 8.00 topupVolu: Scaling Post Mash Volume 1.0323 --> 1.0502 topupVolu: Scaling Estimated OG 1.0421 --> 1.0655 topupVolu: Scaling Estimated OG Grain 1.0388 --> 1.0603 topupVolu: Scaling Pre Boil Gravity 1.0351 --> 1.0545 preCoolOG: Volume before Cooling Contraction = 22.67 preCoolOG: Assumed Approx Loss during cooling = 0.66 preCoolOG: Estimated OG After Cooling Contraction = 1.042068 preCoolOG: Estimated OG Before Cooling Contraction = 1.040905 ABV : 4.0229 1.0421 OG 1.0114 FG IBU : 37.7878 340.0 Honey 200.0 Torrified Wheat 5000.0 Tipple 15.0 0.0 Nelson Sauvin 15.0 15.0 Nelson Sauvin 25.0 60.0 Nelson Sauvin
Monday, October 8, 2012
Label
It's hard to come up with a clever name- so CITRA will have to do. I wish I had brewed more of this as it is probably my best brew to date.
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