Though this 'going down the hill' stage can take any time between a couple of of years to a number of of decades or much.
Another idea is in order to 3/4 one cup of dessert wine together with cake batter, rather than 3/4 a cup of oil. Although an inky, dark wine does not guarantee quality either! https://xn--80adec2ampndbs9h.xn--p1ai