Whitbread Double Brown is a good example of constant recipe tinkering. There’s not a single type of malt which was in every wartime version. Admittedly, pale malt and PA malt were very similar. But I find the chopping and changing between chocolate and crystal malt rather more surprising.
The explanation of the presence of mild malt in the 1941 version is that it was parti-gyled with XX Mild. Before the war, Double Brown was always brewed single-gyle. During the early war years, it was first parti-gyled with 33, Whitbread’s Burton, then with XX Ale.
I can think of no simple explanation for the presence of wheat malt. Except, again, that it was on account of the parti-gyling with XX. In 1940 and 1941 XX suddenly acquired a small percentage of wheat malt. Perhaps for head retention.
|Whitbread Double Brown grists 1939 - 1945|
|Date||Year||OG||pale malt||PA malt||chocolate Malt||crystal malt||mild malt||wheat malt|
|Whitbread brewing records held at the London Metropolitan Archives, document numbers LMA/4453/D/01/107, LMA/4453/D/01/108, LMA/4453/D/01/111 and LMA/4453/D/01/112.|