Santamanía's Madrid Reserva uses a similar botanical recipe to the Madrid Dry, although here proportions are tweaked to work better with the barrel evolution. For this reason, no lime or rosemary are used in the Reserva distillation, replaced instead by Spanish orange peel. The juniper is also dialled up to mitigate the softening effect of the barrel ageing. Each one-shot distillation is matured for three to six months in a single, four year old French oak cask. One barrel. One batch. The barrels, matured in a in a 16th century stone cellar, impart no flavour but do give a lovely straw colour to the gin, and act as an instrument for intensifying and softening the botanical flavours.