Though this 'going down the hill' stage can take any time between a couple of of years to a couple of decades or even more. Another idea is include 3/4 one cup of dessert wine a few cake batter, rather than 3/4 one cup of fat. Although an inky, dark wine does not guarantee quality either! https://groundhook6.bloggersdelight.dk/2024/06/05/lua-chon-ruou-hennessy-mon-tien-thuong-tinh-than-den-hoa-hoc-luong/