Steep: 18 days (tres leches requires proper aging). It's worth the wait.
This is NotCharlesManson recipe adapted for enhanced creamy/milky tones (tres leches). The original recipe is delicious, it is the "fat free milk" one IMO. My version is more "whole milk" geared with a touch of biscuit crust and meringue frosted sugar.
My thanks to the author and source of inspiration!