The hops employed, as far as I can tell, were all German. Which makes a lot of sense. Germany had a large area dedicated to hops. And Heineken was hardly likely to buy hops from the USA.
The hops were starting to get older, all being from the 1940 harvest. As they had been in 1941. The vast majority were a single type of Hallertau. Most of the beers containing no other type. The one exception being the stronger version of Pils, which had three in total.
|Heineken (Rotterdam) hops in 1942|
|Date||Beer||Style||hop 1||hop 2||hop 3|
|26th Jun||Li||Licht Lagerbier||Kr Hallertau 1940|
|26th Jun||Beiersche||Münchener||Kr Hallertau 1940|
|29th Jun||Do||Donker Lagerbier||Kr Hallertau 1940|
|28th Jun||P dun||Pils||Kr Hallertau 1940|
|1st Jul||P||Pils||Kr Hallertau 1940||Breitsch 1940||L. R 1940|
|Heineken brewing record held at the Amsterdamse Stadsarchief, document number 834 - 1760.|