1 May 2022
EXPERIMENT: This is the same recipe as Microbrew 102 (which was a success), but I have dropped the IBUs back from 31 to 25. Did 103 at 20 which was good but perhaps 25 is the sweetspot. As per Weldworks advice, moved to a 2/1 Ch/Sulf ratio at 162 ppm ch/82 ppm sulfate. Also using naked oats in place of flaked oats. Many of my beers lately have been oxidising within 2 weeks and it must be caused during transfer to kegs, so I will have a continious flow to co2 to the keg and to ferm headspace during filling, then cap immediately, with careful/slower filling.
- Strike water was 87c and I initially got 83c! So 85-86c will be fine.
- Mashes in at 75c and got 66c (boom).
- preboil 1046 and post boil 1050 (80% efficiency with no mash stirring).
- Full boil was 133 and at 60 min I had 120 so boiled another 10 minutes to get to 118 (wort chiller depth based on 116). 118 only left 1" headroom so that is the max allowed).
- Kegging: 1011, so 5.1%. Looks a lovely pale gold color. Aroma is solid and great tropical fruite flavour. Bitterness does not seem 'harsh' but is very present and lasting, but may well be fine. Good malt presence.
- As before, liquife stopped running with 1/3 of keg to go. Tipped ferm and filled last keg fine. So, end boil 116-118 litres is ideal.