Boskoops Stout op zijn Grieks

If you have been in Greece, you may have seen and tasted the gum of the Greece gum-tree Mastiha (or Masticha)? Being a home-brewer, you first thoughts are whether you can make a beer with it. Boskoops Stout op zijn Grieks is the result; not a recipy for beginners, as the Mastiha sticks to everything in your brew kit

However, the result is a dark beer with the characteristic smell and taste of Mastiha. A sip of Greece in Boskoop!

Recommended drink temperature: 10...12 oC

Boskoops Stout op zijn Grieks 043

Boskoops Stout op zijn Grieks 025
Botteled: 043: 2022-01-14
025: 2019-01-13
Alc. vol.: 7.4...7.6%
EBC: 75...84
EBU: 52...107
Brew Volume: 20 liter
Barley: 5,840gr Pale Ale
750gr Rookmout
300gr Pale Chocate
400gr Rey
200gr Carafa Special III
Hops: 24gr Amarillo (2019, 8.9% @ 90min)
66gr Amarillo (2020, 10.9% @ 20min)
35gr Amerillo (2020, 10.9% @ flame-out)
Additions: 50gr Mastiha (Masticha) lumps (tear-drops) cut in half, in hop-bag.
100gr oak chips (frans, medium-toasted) on Aberlour A'Bunadh whiskey
Added after 3 days, (after primary fermentation).

Masiha
Warning: the Masiha becomes a sticky lump above 40oC, hence the above manner of adding the Mashiha!

Masiha
Masiha tear-drops
Yeast: Fermentis BE-256 SaAle Belgium
SG (start - end): 1.075 - 1.021
Mashing-scheme: 1e Mash-stap: Protein rest with 24 liter Boskoop water (with 6.0ml lacid acid, 1.0gr CaCl2 and 1.5gr CaSO4 (gips)) of 54oC at 53..54oC: 10 minutes
In 10 minutes heating to 64oC
Beta-amylase at 64oC for 45 minutes
In 5 minuten heating to 70oC
Alpha-amylase at 70oC for 45 minutes
In 5 minuten neating to 78oC
10 minutes mash-out at 78oC
Filtering with pump through wort, stir each 15 min. during Beta-amylase.
Rinsed witht 6.8l liter Boskoop water (non-treated) at 86oC
Fermentation: Fermentation in CCT in 16 days (could be a week longer as some bottles were gushing)

TILT vergistingscurve
Botteling: In 33cl bottles with Cooper Sugar Drop (eff. 2.5gr sugar)
Batch-number(s): 025 and 043
Number of bottles: 56x 0.33l