This directly contradicts statements to [https://www.lambic.info Lambic.Info] staff from Stene, the owner of Akkurat, who reported that it was a unique blend made for their bar.
Additionally, this now leads to confusion about the blend. 50/50 is reportedly a blend of three year old Boon and one year old Lindemans. However, J&J Rose is a blend of three year old Girardin with one year old Boon.
Further validation is required.